diff --git a/VisualStudio/osgPlugins/osg/dot_osg.dsp b/VisualStudio/osgPlugins/osg/dot_osg.dsp
index bdb28bf62..fd6a22c26 100755
--- a/VisualStudio/osgPlugins/osg/dot_osg.dsp
+++ b/VisualStudio/osgPlugins/osg/dot_osg.dsp
@@ -270,6 +270,10 @@ SOURCE=..\..\..\src\osgPlugins\osg\Transform.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\osgPlugins\osg\MatrixTransform.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\src\osgPlugins\osg\BlendFunc.cpp
 # End Source File
 # End Group