diff --git a/src/App/DocumentObjectExtensionPyImp.cpp b/src/App/DocumentObjectExtensionPyImp.cpp
index deab8c77a4..47bd7e1e2c 100644
--- a/src/App/DocumentObjectExtensionPyImp.cpp
+++ b/src/App/DocumentObjectExtensionPyImp.cpp
@@ -23,7 +23,7 @@
 
 #include "PreCompiled.h"
 
-// inclution of the generated files (generated out of PropertyContainerPy.xml)
+// inclusion of the generated files (generated out of PropertyContainerPy.xml)
 #include "DocumentObjectExtensionPy.h"
 #include "DocumentObjectExtensionPy.cpp"
 
diff --git a/src/App/ExtensionPyImp.cpp b/src/App/ExtensionPyImp.cpp
index 03d5ec308a..113d8cf427 100644
--- a/src/App/ExtensionPyImp.cpp
+++ b/src/App/ExtensionPyImp.cpp
@@ -25,7 +25,7 @@
 
 #include "Application.h"
 
-// inclution of the generated files (generated out of PropertyContainerPy.xml)
+// inclusion of the generated files (generated out of PropertyContainerPy.xml)
 #include <App/ExtensionPy.h>
 #include <App/ExtensionPy.cpp>
 
diff --git a/src/App/PropertyContainerPyImp.cpp b/src/App/PropertyContainerPyImp.cpp
index 98a8f69fa4..bf22e85127 100644
--- a/src/App/PropertyContainerPyImp.cpp
+++ b/src/App/PropertyContainerPyImp.cpp
@@ -34,7 +34,7 @@
 #include <boost/iostreams/device/array.hpp>
 #include <boost/iostreams/stream.hpp>
 
-// inclution of the generated files (generated out of PropertyContainerPy.xml)
+// inclusion of the generated files (generated out of PropertyContainerPy.xml)
 #include "PropertyContainerPy.h"
 #include "PropertyContainerPy.cpp"
 
diff --git a/src/Base/PersistencePyImp.cpp b/src/Base/PersistencePyImp.cpp
index 5b7fc42312..56a7dc8620 100644
--- a/src/Base/PersistencePyImp.cpp
+++ b/src/Base/PersistencePyImp.cpp
@@ -28,7 +28,7 @@
 #include "Persistence.h"
 #include "Writer.h"
 
-// inclution of the generated files (generated By PersitancePy.xml)
+// inclusion of the generated files (generated By PersitancePy.xml)
 #include "PersistencePy.h"
 #include "PersistencePy.cpp"
 
diff --git a/src/Gui/ViewProviderExtensionPyImp.cpp b/src/Gui/ViewProviderExtensionPyImp.cpp
index 0c5f8052fc..987267fadb 100644
--- a/src/Gui/ViewProviderExtensionPyImp.cpp
+++ b/src/Gui/ViewProviderExtensionPyImp.cpp
@@ -27,7 +27,7 @@
 # include <sstream>
 #endif
 
-// inclution of the generated files (generated out of PropertyContainerPy.xml)
+// inclusion of the generated files (generated out of PropertyContainerPy.xml)
 #include "ViewProviderExtensionPy.h"
 #include "ViewProviderExtensionPy.cpp"
 #include "ViewProviderDocumentObject.h"