diff --git a/src/osgPlugins/osg/Makefile b/src/osgPlugins/osg/Makefile
index 713030356..cf03022af 100644
--- a/src/osgPlugins/osg/Makefile
+++ b/src/osgPlugins/osg/Makefile
@@ -46,6 +46,7 @@ CXXFILES =\
         TexMat.cpp\
         Texture.cpp\
         Transform.cpp\
+        TextureCubeMap.cpp\
 
 
 LIBS   += $(OSG_LIBS) $(OTHER_LIBS)