diff --git a/src/Mod/Fem/App/AppFemPy.cpp b/src/Mod/Fem/App/AppFemPy.cpp
index 7779ac4767..ce6bde8c37 100644
--- a/src/Mod/Fem/App/AppFemPy.cpp
+++ b/src/Mod/Fem/App/AppFemPy.cpp
@@ -25,23 +25,6 @@
 #ifndef _PreComp_
 # include <memory>
 # include <cstdlib>
-# include <SMESH_Gen.hxx>
-# include <SMESH_Group.hxx>
-# include <SMESHDS_Mesh.hxx>
-# include <SMDS_MeshNode.hxx>
-# include <StdMeshers_MaxLength.hxx>
-# include <StdMeshers_LocalLength.hxx>
-# include <StdMeshers_NumberOfSegments.hxx>
-# include <StdMeshers_AutomaticLength.hxx>
-# include <StdMeshers_MEFISTO_2D.hxx>
-# include <StdMeshers_Deflection1D.hxx>
-# include <StdMeshers_MaxElementArea.hxx>
-# include <StdMeshers_Regular_1D.hxx>
-# include <StdMeshers_QuadranglePreference.hxx>
-# include <StdMeshers_Quadrangle_2D.hxx>
-# include <StdMeshers_LengthFromEdges.hxx>
-# include <StdMeshers_NotConformAllowed.hxx>
-# include <StdMeshers_Arithmetic1D.hxx>
 # include <Standard_Real.hxx>
 #endif
 
diff --git a/src/Mod/Fem/App/FemMesh.cpp b/src/Mod/Fem/App/FemMesh.cpp
index c0aa97627c..1114a561f0 100644
--- a/src/Mod/Fem/App/FemMesh.cpp
+++ b/src/Mod/Fem/App/FemMesh.cpp
@@ -24,6 +24,7 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <cstdlib>
 # include <memory>
 # include <Bnd_Box.hxx>
diff --git a/src/Mod/Fem/App/FemMeshPyImp.cpp b/src/Mod/Fem/App/FemMeshPyImp.cpp
index 9073f4efb0..b50c943a3e 100644
--- a/src/Mod/Fem/App/FemMeshPyImp.cpp
+++ b/src/Mod/Fem/App/FemMeshPyImp.cpp
@@ -26,6 +26,7 @@
 #ifndef _PreComp_
 # include <algorithm>
 # include <stdexcept>
+# include <Python.h>
 # include <SMESH_Gen.hxx>
 # include <SMESH_Group.hxx>
 # include <SMESH_Mesh.hxx>
diff --git a/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp b/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp
index b0eb876df4..b8c587ac5e 100644
--- a/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp
+++ b/src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp
@@ -25,6 +25,7 @@
 #include <SMESH_Version.h>
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <SMESH_Gen.hxx>
 # include <SMESHDS_Mesh.hxx>
 # include <SMESH_Mesh.hxx>
diff --git a/src/Mod/Fem/App/FemMeshShapeObject.cpp b/src/Mod/Fem/App/FemMeshShapeObject.cpp
index d81f0229c1..2e9a5d20a0 100644
--- a/src/Mod/Fem/App/FemMeshShapeObject.cpp
+++ b/src/Mod/Fem/App/FemMeshShapeObject.cpp
@@ -24,6 +24,7 @@
 #include <SMESH_Version.h>
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <SMESH_Gen.hxx>
 # include <SMESH_Mesh.hxx>
 # include <SMDS_VolumeTool.hxx>
diff --git a/src/Mod/Fem/App/FemPostFilter.cpp b/src/Mod/Fem/App/FemPostFilter.cpp
index abfb9074de..ca6550dd30 100644
--- a/src/Mod/Fem/App/FemPostFilter.cpp
+++ b/src/Mod/Fem/App/FemPostFilter.cpp
@@ -23,6 +23,7 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <vtkFieldData.h>
 # include <vtkPointData.h>
 #endif
diff --git a/src/Mod/Fem/App/FemPostObject.cpp b/src/Mod/Fem/App/FemPostObject.cpp
index ecbeb02ab8..03ca2692aa 100644
--- a/src/Mod/Fem/App/FemPostObject.cpp
+++ b/src/Mod/Fem/App/FemPostObject.cpp
@@ -23,6 +23,7 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <vtkPointData.h>
 # include <vtkCellData.h>
 #endif
diff --git a/src/Mod/Fem/App/FemPostPipeline.cpp b/src/Mod/Fem/App/FemPostPipeline.cpp
index 925cf97808..5ebe1f0d58 100644
--- a/src/Mod/Fem/App/FemPostPipeline.cpp
+++ b/src/Mod/Fem/App/FemPostPipeline.cpp
@@ -23,6 +23,7 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <SMESH_Mesh.hxx>
 # include <vtkDataSetReader.h>
 # include <vtkGeometryFilter.h>
diff --git a/src/Mod/Fem/App/FemVTKTools.cpp b/src/Mod/Fem/App/FemVTKTools.cpp
index c44fc04c38..d3c072c93e 100644
--- a/src/Mod/Fem/App/FemVTKTools.cpp
+++ b/src/Mod/Fem/App/FemVTKTools.cpp
@@ -24,6 +24,7 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <cstdlib>
 # include <memory>
 # include <cmath>
diff --git a/src/Mod/Fem/App/PropertyPostDataObject.cpp b/src/Mod/Fem/App/PropertyPostDataObject.cpp
index c45134faf7..1f57f41612 100644
--- a/src/Mod/Fem/App/PropertyPostDataObject.cpp
+++ b/src/Mod/Fem/App/PropertyPostDataObject.cpp
@@ -23,6 +23,7 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <Python.h>
 # include <vtkPolyData.h>
 # include <vtkStructuredGrid.h>
 # include <vtkRectilinearGrid.h>