diff --git a/src/osgDB/Registry.cpp b/src/osgDB/Registry.cpp
index db62c7b10..3e9319eff 100644
--- a/src/osgDB/Registry.cpp
+++ b/src/osgDB/Registry.cpp
@@ -288,6 +288,9 @@ Registry::Registry()
     addFileExtensionAlias("terrain", "osgterrain");
     addFileExtensionAlias("view",  "osgviewer");
 
+    //addFileExtensionAlias("vsga", "vsg");
+    //addFileExtensionAlias("vsgb", "vsg");
+
     addFileExtensionAlias("sgi",  "rgb");
     addFileExtensionAlias("rgba", "rgb");
     addFileExtensionAlias("int",  "rgb");