diff --git a/src/Mod/Inspection/App/AppInspection.cpp b/src/Mod/Inspection/App/AppInspection.cpp
index 13ed115ee6..1e0eb5e04b 100644
--- a/src/Mod/Inspection/App/AppInspection.cpp
+++ b/src/Mod/Inspection/App/AppInspection.cpp
@@ -20,7 +20,6 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Console.h>
 #include <Base/PyObjectBase.h>
diff --git a/src/Mod/Inspection/App/CMakeLists.txt b/src/Mod/Inspection/App/CMakeLists.txt
index 5712ccf32f..c4992428b0 100644
--- a/src/Mod/Inspection/App/CMakeLists.txt
+++ b/src/Mod/Inspection/App/CMakeLists.txt
@@ -9,7 +9,6 @@ SET(Inspection_SRCS
     AppInspection.cpp
     InspectionFeature.cpp
     InspectionFeature.h
-    PreCompiled.cpp
     PreCompiled.h
 )
 
@@ -17,13 +16,14 @@ set(Inspection_Scripts
     ../Init.py
 )
 
+add_library(Inspection SHARED ${Inspection_SRCS} ${Inspection_Scripts})
+
 if(FREECAD_USE_PCH)
-    add_definitions(-D_PreComp_)
-    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PCH_SRCS ${Inspection_SRCS})
-    ADD_MSVC_PRECOMPILED_HEADER(Inspection PreCompiled.h PreCompiled.cpp PCH_SRCS)
+    target_precompile_headers(Inspection PRIVATE
+            $<$<COMPILE_LANGUAGE:CXX>:"${CMAKE_CURRENT_LIST_DIR}/PreCompiled.h">
+    )
 endif(FREECAD_USE_PCH)
 
-add_library(Inspection SHARED ${Inspection_SRCS} ${Inspection_Scripts})
 target_include_directories(
     Inspection
     PRIVATE
diff --git a/src/Mod/Inspection/App/InspectionFeature.cpp b/src/Mod/Inspection/App/InspectionFeature.cpp
index c6b5594eb8..688cdce1a5 100644
--- a/src/Mod/Inspection/App/InspectionFeature.cpp
+++ b/src/Mod/Inspection/App/InspectionFeature.cpp
@@ -20,9 +20,6 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-
-#ifndef _PreComp_
 #include <boost/core/ignore_unused.hpp>
 #include <numeric>
 #include <limits>
@@ -39,7 +36,6 @@
 #include <QFuture>
 #include <QFutureWatcher>
 #include <QtConcurrentMap>
-#endif
 
 #include <Base/Console.h>
 #include <Base/FutureWatcherProgress.h>
diff --git a/src/Mod/Inspection/App/PreCompiled.cpp b/src/Mod/Inspection/App/PreCompiled.cpp
deleted file mode 100644
index 2ac4ea20cd..0000000000
--- a/src/Mod/Inspection/App/PreCompiled.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-/***************************************************************************
- *   Copyright (c) 2011 Werner Mayer <wmayer[at]users.sourceforge.net>     *
- *                                                                         *
- *   This file is part of the FreeCAD CAx development system.              *
- *                                                                         *
- *   This library is free software; you can redistribute it and/or         *
- *   modify it under the terms of the GNU Library General Public           *
- *   License as published by the Free Software Foundation; either          *
- *   version 2 of the License, or (at your option) any later version.      *
- *                                                                         *
- *   This library  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 Library General Public License for more details.                  *
- *                                                                         *
- *   You should have received a copy of the GNU Library General Public     *
- *   License along with this library; see the file COPYING.LIB. If not,    *
- *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
- *   Suite 330, Boston, MA  02111-1307, USA                                *
- *                                                                         *
- ***************************************************************************/
-
-#include "PreCompiled.h"
diff --git a/src/Mod/Inspection/App/PreCompiled.h b/src/Mod/Inspection/App/PreCompiled.h
index 447cd24797..329650e51c 100644
--- a/src/Mod/Inspection/App/PreCompiled.h
+++ b/src/Mod/Inspection/App/PreCompiled.h
@@ -25,8 +25,6 @@
 
 #include <FCConfig.h>
 
-#ifdef _PreComp_
-
 // STL
 #include <numeric>
 
@@ -48,6 +46,4 @@
 #include <QFutureWatcher>
 #include <QtConcurrentMap>
 
-#endif  //_PreComp_
-
 #endif
diff --git a/src/Mod/Inspection/Gui/AppInspectionGui.cpp b/src/Mod/Inspection/Gui/AppInspectionGui.cpp
index a1bda821b0..714bb336d2 100644
--- a/src/Mod/Inspection/Gui/AppInspectionGui.cpp
+++ b/src/Mod/Inspection/Gui/AppInspectionGui.cpp
@@ -20,7 +20,6 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Console.h>
 #include <Base/Interpreter.h>
diff --git a/src/Mod/Inspection/Gui/CMakeLists.txt b/src/Mod/Inspection/Gui/CMakeLists.txt
index d0adb9a68c..f8a1eeb420 100644
--- a/src/Mod/Inspection/Gui/CMakeLists.txt
+++ b/src/Mod/Inspection/Gui/CMakeLists.txt
@@ -21,7 +21,6 @@ SET(InspectionGui_SRCS
     ${Dialogs_SRCS}
     AppInspectionGui.cpp
     Command.cpp
-    PreCompiled.cpp
     PreCompiled.h
     ViewProviderInspection.cpp
     ViewProviderInspection.h
@@ -33,12 +32,6 @@ set(InspectionGui_Scripts
     ../InitGui.py
 )
 
-if(FREECAD_USE_PCH)
-    add_definitions(-D_PreComp_)
-    GET_MSVC_PRECOMPILED_SOURCE("PreCompiled.cpp" PCH_SRCS ${InspectionGui_SRCS})
-    ADD_MSVC_PRECOMPILED_HEADER(InspectionGui PreCompiled.h PreCompiled.cpp PCH_SRCS)
-endif(FREECAD_USE_PCH)
-
 SET(InspectionGuiIcon_SVG
     Resources/icons/InspectionWorkbench.svg
 )
@@ -49,6 +42,12 @@ add_library(InspectionGui SHARED
     ${InspectionGuiIcon_SVG}
 )
 
+if(FREECAD_USE_PCH)
+    target_precompile_headers(InspectionGui PRIVATE
+            $<$<COMPILE_LANGUAGE:CXX>:"${CMAKE_CURRENT_LIST_DIR}/PreCompiled.h">
+    )
+endif(FREECAD_USE_PCH)
+
 target_include_directories(
     InspectionGui
     PRIVATE
diff --git a/src/Mod/Inspection/Gui/Command.cpp b/src/Mod/Inspection/Gui/Command.cpp
index 29ab5bec00..14f7c7fd53 100644
--- a/src/Mod/Inspection/Gui/Command.cpp
+++ b/src/Mod/Inspection/Gui/Command.cpp
@@ -20,10 +20,8 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
 #include <Inventor/events/SoButtonEvent.h>
-#endif
+
 
 #include <App/Document.h>
 #include <Gui/Application.h>
diff --git a/src/Mod/Inspection/Gui/PreCompiled.cpp b/src/Mod/Inspection/Gui/PreCompiled.cpp
deleted file mode 100644
index 2ac4ea20cd..0000000000
--- a/src/Mod/Inspection/Gui/PreCompiled.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-/***************************************************************************
- *   Copyright (c) 2011 Werner Mayer <wmayer[at]users.sourceforge.net>     *
- *                                                                         *
- *   This file is part of the FreeCAD CAx development system.              *
- *                                                                         *
- *   This library is free software; you can redistribute it and/or         *
- *   modify it under the terms of the GNU Library General Public           *
- *   License as published by the Free Software Foundation; either          *
- *   version 2 of the License, or (at your option) any later version.      *
- *                                                                         *
- *   This library  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 Library General Public License for more details.                  *
- *                                                                         *
- *   You should have received a copy of the GNU Library General Public     *
- *   License along with this library; see the file COPYING.LIB. If not,    *
- *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
- *   Suite 330, Boston, MA  02111-1307, USA                                *
- *                                                                         *
- ***************************************************************************/
-
-#include "PreCompiled.h"
diff --git a/src/Mod/Inspection/Gui/PreCompiled.h b/src/Mod/Inspection/Gui/PreCompiled.h
index 74816df791..fda61dfe10 100644
--- a/src/Mod/Inspection/Gui/PreCompiled.h
+++ b/src/Mod/Inspection/Gui/PreCompiled.h
@@ -26,8 +26,6 @@
 #include <FCConfig.h>
 
 
-#ifdef _PreComp_
-
 // STL
 
 // Inventor
@@ -54,6 +52,4 @@
 #include <QMenu>
 #include <QMessageBox>
 
-#endif  //_PreComp_
-
 #endif  // GUI_PRECOMPILED_H
diff --git a/src/Mod/Inspection/Gui/ViewProviderInspection.cpp b/src/Mod/Inspection/Gui/ViewProviderInspection.cpp
index cd0728be80..d720bff784 100644
--- a/src/Mod/Inspection/Gui/ViewProviderInspection.cpp
+++ b/src/Mod/Inspection/Gui/ViewProviderInspection.cpp
@@ -20,9 +20,7 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
-#ifndef _PreComp_
 #include <QApplication>
 #include <QMenu>
 #include <QMessageBox>
@@ -44,7 +42,6 @@
 #include <Inventor/nodes/SoNormal.h>
 #include <Inventor/nodes/SoPointSet.h>
 #include <Inventor/nodes/SoShapeHints.h>
-#endif
 
 #include <App/GeoFeature.h>
 #include <Gui/Application.h>
diff --git a/src/Mod/Inspection/Gui/VisualInspection.cpp b/src/Mod/Inspection/Gui/VisualInspection.cpp
index 5be5012921..8d55cdc6ca 100644
--- a/src/Mod/Inspection/Gui/VisualInspection.cpp
+++ b/src/Mod/Inspection/Gui/VisualInspection.cpp
@@ -20,10 +20,7 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
-#ifndef _PreComp_
 #include <limits>
-#endif
 
 #include <App/Document.h>
 #include <App/DocumentObject.h>
diff --git a/src/Mod/Inspection/Gui/Workbench.cpp b/src/Mod/Inspection/Gui/Workbench.cpp
index c2a02150d0..001438333d 100644
--- a/src/Mod/Inspection/Gui/Workbench.cpp
+++ b/src/Mod/Inspection/Gui/Workbench.cpp
@@ -20,7 +20,6 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include "Workbench.h"