diff --git a/VisualStudio/Demos/osgconv/osgconv.dsp b/VisualStudio/Demos/osgconv/osgconv.dsp
index c63aebc0e..ecb325b39 100755
--- a/VisualStudio/Demos/osgconv/osgconv.dsp
+++ b/VisualStudio/Demos/osgconv/osgconv.dsp
@@ -85,6 +85,10 @@ LINK32=link.exe
 # Name "osgconv - Win32 Debug"
 # Begin Source File
 
+SOURCE=..\..\..\src\Demos\osgconv\OrientationConverter.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\src\Demos\osgconv\osgconv.cpp
 # End Source File
 # End Target