diff --git a/src/Mod/Assembly/App/AppAssembly.cpp b/src/Mod/Assembly/App/AppAssembly.cpp
index 562221a891..118e18f029 100644
--- a/src/Mod/Assembly/App/AppAssembly.cpp
+++ b/src/Mod/Assembly/App/AppAssembly.cpp
@@ -21,7 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Console.h>
 #include <Base/Interpreter.h>
diff --git a/src/Mod/Assembly/App/AppAssemblyPy.cpp b/src/Mod/Assembly/App/AppAssemblyPy.cpp
index f62cf30c8f..49c9bab95d 100644
--- a/src/Mod/Assembly/App/AppAssemblyPy.cpp
+++ b/src/Mod/Assembly/App/AppAssemblyPy.cpp
@@ -21,7 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Interpreter.h>
 #include <Base/Tools.h>
diff --git a/src/Mod/Assembly/App/AssemblyLink.cpp b/src/Mod/Assembly/App/AssemblyLink.cpp
index f12169669c..4ab6771da8 100644
--- a/src/Mod/Assembly/App/AssemblyLink.cpp
+++ b/src/Mod/Assembly/App/AssemblyLink.cpp
@@ -21,11 +21,9 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
 #include <cmath>
 #include <vector>
-#endif
+
 
 #include <App/Application.h>
 #include <App/Document.h>
diff --git a/src/Mod/Assembly/App/AssemblyLinkPyImp.cpp b/src/Mod/Assembly/App/AssemblyLinkPyImp.cpp
index 5d9a9e78c7..7ca17b4e3b 100644
--- a/src/Mod/Assembly/App/AssemblyLinkPyImp.cpp
+++ b/src/Mod/Assembly/App/AssemblyLinkPyImp.cpp
@@ -22,8 +22,6 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
-
 // inclusion of the generated files (generated out of AssemblyLink.xml)
 #include "AssemblyLinkPy.h"
 #include "AssemblyLinkPy.cpp"
diff --git a/src/Mod/Assembly/App/AssemblyObject.cpp b/src/Mod/Assembly/App/AssemblyObject.cpp
index 3be6e90d9c..b9304f4e4e 100644
--- a/src/Mod/Assembly/App/AssemblyObject.cpp
+++ b/src/Mod/Assembly/App/AssemblyObject.cpp
@@ -21,13 +21,11 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
 #include <boost/core/ignore_unused.hpp>
 #include <cmath>
 #include <vector>
 #include <unordered_map>
-#endif
+
 
 #include <App/Application.h>
 #include <App/Datums.h>
diff --git a/src/Mod/Assembly/App/AssemblyObjectPyImp.cpp b/src/Mod/Assembly/App/AssemblyObjectPyImp.cpp
index 74b6bc5f8f..4e44a9e8ea 100644
--- a/src/Mod/Assembly/App/AssemblyObjectPyImp.cpp
+++ b/src/Mod/Assembly/App/AssemblyObjectPyImp.cpp
@@ -22,8 +22,6 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
-
 // inclusion of the generated files (generated out of AssemblyObject.xml)
 #include "AssemblyObjectPy.h"
 #include "AssemblyObjectPy.cpp"
diff --git a/src/Mod/Assembly/App/AssemblyUtils.cpp b/src/Mod/Assembly/App/AssemblyUtils.cpp
index d55156c13e..86786484b3 100644
--- a/src/Mod/Assembly/App/AssemblyUtils.cpp
+++ b/src/Mod/Assembly/App/AssemblyUtils.cpp
@@ -21,8 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
 #include <BRepAdaptor_Curve.hxx>
 #include <BRepAdaptor_Surface.hxx>
 #include <TopoDS.hxx>
@@ -30,7 +28,7 @@
 #include <gp_Circ.hxx>
 #include <gp_Cylinder.hxx>
 #include <gp_Sphere.hxx>
-#endif
+
 
 #include <App/Application.h>
 #include <App/Datums.h>
diff --git a/src/Mod/Assembly/App/BomGroup.cpp b/src/Mod/Assembly/App/BomGroup.cpp
index 7754c39f6d..1ab091583a 100644
--- a/src/Mod/Assembly/App/BomGroup.cpp
+++ b/src/Mod/Assembly/App/BomGroup.cpp
@@ -21,10 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
-#endif
-
 #include <App/Application.h>
 #include <App/Document.h>
 #include <App/FeaturePythonPyImp.h>
diff --git a/src/Mod/Assembly/App/BomGroupPyImp.cpp b/src/Mod/Assembly/App/BomGroupPyImp.cpp
index a73a733cf7..4c22736390 100644
--- a/src/Mod/Assembly/App/BomGroupPyImp.cpp
+++ b/src/Mod/Assembly/App/BomGroupPyImp.cpp
@@ -21,8 +21,6 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
-
 // inclusion of the generated files (generated out of BomGroup.xml)
 #include "BomGroupPy.h"
 #include "BomGroupPy.cpp"
diff --git a/src/Mod/Assembly/App/BomObject.cpp b/src/Mod/Assembly/App/BomObject.cpp
index 3a63fd52e0..ca9b8c1679 100644
--- a/src/Mod/Assembly/App/BomObject.cpp
+++ b/src/Mod/Assembly/App/BomObject.cpp
@@ -21,11 +21,9 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
 #include <cmath>
 #include <vector>
-#endif
+
 
 #include <App/Application.h>
 #include <App/Document.h>
diff --git a/src/Mod/Assembly/App/BomObjectPyImp.cpp b/src/Mod/Assembly/App/BomObjectPyImp.cpp
index 3df251f35e..4066df238f 100644
--- a/src/Mod/Assembly/App/BomObjectPyImp.cpp
+++ b/src/Mod/Assembly/App/BomObjectPyImp.cpp
@@ -21,8 +21,6 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
-
 // inclusion of the generated files (generated out of BomObject.xml)
 #include "BomObjectPy.h"
 #include "BomObjectPy.cpp"
diff --git a/src/Mod/Assembly/App/CMakeLists.txt b/src/Mod/Assembly/App/CMakeLists.txt
index f6696ad805..70c8e0f9d3 100644
--- a/src/Mod/Assembly/App/CMakeLists.txt
+++ b/src/Mod/Assembly/App/CMakeLists.txt
@@ -37,7 +37,6 @@ SOURCE_GROUP("Python" FILES ${Python_SRCS})
 SET(Module_SRCS
     AppAssembly.cpp
     AppAssemblyPy.cpp
-    PreCompiled.cpp
     PreCompiled.h
 )
 SOURCE_GROUP("Module" FILES ${Module_SRCS})
@@ -78,9 +77,9 @@ if (FREECAD_WARN_ERROR)
 endif()
 
 if(FREECAD_USE_PCH)
-    add_definitions(-D_PreComp_)
-    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PCH_SRCS ${Assembly_SRCS})
-    ADD_MSVC_PRECOMPILED_HEADER(Assembly PreCompiled.h PreCompiled.cpp PCH_SRCS)
+    target_precompile_headers(Assembly PRIVATE
+            $<$<COMPILE_LANGUAGE:CXX>:"${CMAKE_CURRENT_LIST_DIR}/PreCompiled.h">
+    )
 endif(FREECAD_USE_PCH)
 
 SET_BIN_DIR(Assembly AssemblyApp /Mod/Assembly)
diff --git a/src/Mod/Assembly/App/JointGroup.cpp b/src/Mod/Assembly/App/JointGroup.cpp
index c22bbbdd33..18e7c26679 100644
--- a/src/Mod/Assembly/App/JointGroup.cpp
+++ b/src/Mod/Assembly/App/JointGroup.cpp
@@ -21,9 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
-#endif
 
 #include <App/Application.h>
 #include <App/Document.h>
diff --git a/src/Mod/Assembly/App/JointGroupPyImp.cpp b/src/Mod/Assembly/App/JointGroupPyImp.cpp
index a403ca4d9a..2d23645b04 100644
--- a/src/Mod/Assembly/App/JointGroupPyImp.cpp
+++ b/src/Mod/Assembly/App/JointGroupPyImp.cpp
@@ -21,8 +21,6 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
-
 // inclusion of the generated files (generated out of JointGroup.xml)
 #include "JointGroupPy.h"
 #include "JointGroupPy.cpp"
diff --git a/src/Mod/Assembly/App/PreCompiled.cpp b/src/Mod/Assembly/App/PreCompiled.cpp
deleted file mode 100644
index ed7cfc6869..0000000000
--- a/src/Mod/Assembly/App/PreCompiled.cpp
+++ /dev/null
@@ -1,25 +0,0 @@
-// SPDX-License-Identifier: LGPL-2.1-or-later
-/****************************************************************************
- *                                                                          *
- *   Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
- *                                                                          *
- *   This file is part of FreeCAD.                                          *
- *                                                                          *
- *   FreeCAD is free software: you can redistribute it and/or modify it     *
- *   under the terms of the GNU Lesser General Public License as            *
- *   published by the Free Software Foundation, either version 2.1 of the   *
- *   License, or (at your option) any later version.                        *
- *                                                                          *
- *   FreeCAD is distributed in the hope that it will be useful, but         *
- *   WITHOUT ANY WARRANTY; without even the implied warranty of             *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
- *   Lesser General Public License for more details.                        *
- *                                                                          *
- *   You should have received a copy of the GNU Lesser General Public       *
- *   License along with FreeCAD. If not, see                                *
- *   <https://www.gnu.org/licenses/>.                                       *
- *                                                                          *
- ***************************************************************************/
-
-
-#include "PreCompiled.h"
diff --git a/src/Mod/Assembly/App/PreCompiled.h b/src/Mod/Assembly/App/PreCompiled.h
index 5027472fb0..7d20eaf595 100644
--- a/src/Mod/Assembly/App/PreCompiled.h
+++ b/src/Mod/Assembly/App/PreCompiled.h
@@ -26,8 +26,6 @@
 
 #include <FCConfig.h>
 
-#ifdef _PreComp_
-
 // standard
 #include <cinttypes>
 #include <cmath>
@@ -48,5 +46,4 @@
 #include <TopoDS.hxx>
 #include <TopoDS_Face.hxx>
 
-#endif  // _PreComp_
 #endif  // ASSEMBLY_PRECOMPILED_H
diff --git a/src/Mod/Assembly/App/SimulationGroup.cpp b/src/Mod/Assembly/App/SimulationGroup.cpp
index d80197a414..71f1c574b2 100644
--- a/src/Mod/Assembly/App/SimulationGroup.cpp
+++ b/src/Mod/Assembly/App/SimulationGroup.cpp
@@ -21,9 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
-#endif
 
 #include <App/Application.h>
 #include <App/Document.h>
diff --git a/src/Mod/Assembly/App/SimulationGroupPyImp.cpp b/src/Mod/Assembly/App/SimulationGroupPyImp.cpp
index 1d08082cb8..4ef1c6d111 100644
--- a/src/Mod/Assembly/App/SimulationGroupPyImp.cpp
+++ b/src/Mod/Assembly/App/SimulationGroupPyImp.cpp
@@ -22,8 +22,6 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
-
 // inclusion of the generated files (generated out of SimulationGroup.xml)
 #include "SimulationGroupPy.h"
 #include "SimulationGroupPy.cpp"
diff --git a/src/Mod/Assembly/App/ViewGroup.cpp b/src/Mod/Assembly/App/ViewGroup.cpp
index 864e692a62..536bce8604 100644
--- a/src/Mod/Assembly/App/ViewGroup.cpp
+++ b/src/Mod/Assembly/App/ViewGroup.cpp
@@ -21,9 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
-#endif
 
 #include <App/Application.h>
 #include <App/Document.h>
diff --git a/src/Mod/Assembly/App/ViewGroupPyImp.cpp b/src/Mod/Assembly/App/ViewGroupPyImp.cpp
index aa86e9d416..5fda15ecc4 100644
--- a/src/Mod/Assembly/App/ViewGroupPyImp.cpp
+++ b/src/Mod/Assembly/App/ViewGroupPyImp.cpp
@@ -21,8 +21,6 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
-
 // inclusion of the generated files (generated out of ViewGroup.xml)
 #include "ViewGroupPy.h"
 #include "ViewGroupPy.cpp"
diff --git a/src/Mod/Assembly/Gui/AppAssemblyGui.cpp b/src/Mod/Assembly/Gui/AppAssemblyGui.cpp
index eb0e09c932..4966c27bf6 100644
--- a/src/Mod/Assembly/Gui/AppAssemblyGui.cpp
+++ b/src/Mod/Assembly/Gui/AppAssemblyGui.cpp
@@ -21,7 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Console.h>
 #include <Base/Interpreter.h>
diff --git a/src/Mod/Assembly/Gui/AppAssemblyGuiPy.cpp b/src/Mod/Assembly/Gui/AppAssemblyGuiPy.cpp
index dd6f0fdf22..f82ca2409a 100644
--- a/src/Mod/Assembly/Gui/AppAssemblyGuiPy.cpp
+++ b/src/Mod/Assembly/Gui/AppAssemblyGuiPy.cpp
@@ -21,7 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Interpreter.h>
 
diff --git a/src/Mod/Assembly/Gui/CMakeLists.txt b/src/Mod/Assembly/Gui/CMakeLists.txt
index bcb51c20c2..541a6959a9 100644
--- a/src/Mod/Assembly/Gui/CMakeLists.txt
+++ b/src/Mod/Assembly/Gui/CMakeLists.txt
@@ -38,7 +38,6 @@ SOURCE_GROUP("Python" FILES ${Python_SRCS})
 SET(AssemblyGui_SRCS_Module
     AppAssemblyGui.cpp
     AppAssemblyGuiPy.cpp
-    PreCompiled.cpp
     PreCompiled.h
     TaskAssemblyMessages.cpp
     TaskAssemblyMessages.h
@@ -69,18 +68,18 @@ SET(AssemblyGui_SRCS
     ${Python_SRCS}
 )
 
-if(FREECAD_USE_PCH)
-    add_definitions(-D_PreComp_)
-    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PCH_SRCS ${AssemblyGui_SRCS})
-    ADD_MSVC_PRECOMPILED_HEADER(AssemblyGui PreCompiled.h PreCompiled.cpp PCH_SRCS)
-endif(FREECAD_USE_PCH)
-
 SET(AssemblyGuiIcon_SVG
     Resources/icons/AssemblyWorkbench.svg
 )
 
 add_library(AssemblyGui SHARED ${AssemblyGui_SRCS} ${AssemblyGuiIcon_SVG})
 
+if(FREECAD_USE_PCH)
+    target_precompile_headers(AssemblyGui PRIVATE
+            $<$<COMPILE_LANGUAGE:CXX>:"${CMAKE_CURRENT_LIST_DIR}/PreCompiled.h">
+    )
+endif(FREECAD_USE_PCH)
+
 target_include_directories(
     AssemblyGui
     PRIVATE
diff --git a/src/Mod/Assembly/Gui/PreCompiled.cpp b/src/Mod/Assembly/Gui/PreCompiled.cpp
deleted file mode 100644
index ed7cfc6869..0000000000
--- a/src/Mod/Assembly/Gui/PreCompiled.cpp
+++ /dev/null
@@ -1,25 +0,0 @@
-// SPDX-License-Identifier: LGPL-2.1-or-later
-/****************************************************************************
- *                                                                          *
- *   Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
- *                                                                          *
- *   This file is part of FreeCAD.                                          *
- *                                                                          *
- *   FreeCAD is free software: you can redistribute it and/or modify it     *
- *   under the terms of the GNU Lesser General Public License as            *
- *   published by the Free Software Foundation, either version 2.1 of the   *
- *   License, or (at your option) any later version.                        *
- *                                                                          *
- *   FreeCAD is distributed in the hope that it will be useful, but         *
- *   WITHOUT ANY WARRANTY; without even the implied warranty of             *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
- *   Lesser General Public License for more details.                        *
- *                                                                          *
- *   You should have received a copy of the GNU Lesser General Public       *
- *   License along with FreeCAD. If not, see                                *
- *   <https://www.gnu.org/licenses/>.                                       *
- *                                                                          *
- ***************************************************************************/
-
-
-#include "PreCompiled.h"
diff --git a/src/Mod/Assembly/Gui/PreCompiled.h b/src/Mod/Assembly/Gui/PreCompiled.h
index 59d045527d..90b02a0fdd 100644
--- a/src/Mod/Assembly/Gui/PreCompiled.h
+++ b/src/Mod/Assembly/Gui/PreCompiled.h
@@ -26,7 +26,6 @@
 
 #include <FCConfig.h>
 
-#ifdef _PreComp_
 
 // STL
 #include <algorithm>
@@ -48,6 +47,5 @@
 // all of Inventor
 #include <Gui/InventorAll.h>
 
-#endif  //_PreComp_
 
 #endif  // ASSEMBLYGUI_PRECOMPILED_H
diff --git a/src/Mod/Assembly/Gui/TaskAssemblyMessages.cpp b/src/Mod/Assembly/Gui/TaskAssemblyMessages.cpp
index a85ed0e0e0..6d3da0ae38 100644
--- a/src/Mod/Assembly/Gui/TaskAssemblyMessages.cpp
+++ b/src/Mod/Assembly/Gui/TaskAssemblyMessages.cpp
@@ -21,10 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
-#endif
-
 #include <Gui/Application.h>
 #include <Gui/BitmapFactory.h>
 #include <Gui/Command.h>
diff --git a/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp b/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp
index 66b83809f7..3ef1cf7cb3 100644
--- a/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp
@@ -21,9 +21,7 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
-#ifndef _PreComp_
 #include <boost/core/ignore_unused.hpp>
 #include <QMessageBox>
 #include <QTimer>
@@ -38,7 +36,7 @@
 #include <Inventor/nodes/SoTransform.h>
 #include <Inventor/sensors/SoFieldSensor.h>
 #include <Inventor/sensors/SoSensor.h>
-#endif
+
 
 #include <chrono>
 
diff --git a/src/Mod/Assembly/Gui/ViewProviderAssemblyLink.cpp b/src/Mod/Assembly/Gui/ViewProviderAssemblyLink.cpp
index 04f8ff311a..becbf84f56 100644
--- a/src/Mod/Assembly/Gui/ViewProviderAssemblyLink.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderAssemblyLink.cpp
@@ -21,15 +21,13 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
-#ifndef _PreComp_
 #include <QAction>
 #include <QMenu>
 #include <vector>
 #include <sstream>
 #include <iostream>
-#endif
+
 
 #include <App/Link.h>
 #include <App/Document.h>
diff --git a/src/Mod/Assembly/Gui/ViewProviderAssemblyPyImp.cpp b/src/Mod/Assembly/Gui/ViewProviderAssemblyPyImp.cpp
index 463be2e9ea..0ebd0ff52c 100644
--- a/src/Mod/Assembly/Gui/ViewProviderAssemblyPyImp.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderAssemblyPyImp.cpp
@@ -20,7 +20,6 @@
  *                                                                         *
  **************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Interpreter.h>
 #include <Base/PlacementPy.h>
diff --git a/src/Mod/Assembly/Gui/ViewProviderBom.cpp b/src/Mod/Assembly/Gui/ViewProviderBom.cpp
index ee2146ad8f..f0e47f13e2 100644
--- a/src/Mod/Assembly/Gui/ViewProviderBom.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderBom.cpp
@@ -21,11 +21,9 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
-#ifndef _PreComp_
 #include <vector>
-#endif
+
 
 #include <App/Document.h>
 #include <App/DocumentObject.h>
diff --git a/src/Mod/Assembly/Gui/ViewProviderBomGroup.cpp b/src/Mod/Assembly/Gui/ViewProviderBomGroup.cpp
index 980426cc11..1949fcd8a3 100644
--- a/src/Mod/Assembly/Gui/ViewProviderBomGroup.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderBomGroup.cpp
@@ -21,11 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-
-#ifndef _PreComp_
-#endif
-
 #include <App/Document.h>
 #include <App/DocumentObject.h>
 #include <Gui/Application.h>
diff --git a/src/Mod/Assembly/Gui/ViewProviderJointGroup.cpp b/src/Mod/Assembly/Gui/ViewProviderJointGroup.cpp
index f56dbde95e..d1151761b1 100644
--- a/src/Mod/Assembly/Gui/ViewProviderJointGroup.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderJointGroup.cpp
@@ -21,11 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-
-#ifndef _PreComp_
-#endif
-
 #include <App/Document.h>
 #include <App/DocumentObject.h>
 #include <Gui/Application.h>
diff --git a/src/Mod/Assembly/Gui/ViewProviderSimulationGroup.cpp b/src/Mod/Assembly/Gui/ViewProviderSimulationGroup.cpp
index ccfac42aec..d155d05b49 100644
--- a/src/Mod/Assembly/Gui/ViewProviderSimulationGroup.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderSimulationGroup.cpp
@@ -21,11 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-
-#ifndef _PreComp_
-#endif
-
 #include <App/Document.h>
 #include <App/DocumentObject.h>
 #include <Gui/Application.h>
diff --git a/src/Mod/Assembly/Gui/ViewProviderViewGroup.cpp b/src/Mod/Assembly/Gui/ViewProviderViewGroup.cpp
index bd32b579f3..496de73b48 100644
--- a/src/Mod/Assembly/Gui/ViewProviderViewGroup.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderViewGroup.cpp
@@ -21,11 +21,6 @@
  *                                                                          *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-
-#ifndef _PreComp_
-#endif
-
 #include <App/Document.h>
 #include <App/DocumentObject.h>
 #include <Gui/Application.h>