diff --git a/src/osgUtil/RenderBin.cpp b/src/osgUtil/RenderBin.cpp
index 6586afdfd..edceeba02 100644
--- a/src/osgUtil/RenderBin.cpp
+++ b/src/osgUtil/RenderBin.cpp
@@ -35,6 +35,8 @@ class RenderBinPrototypeList : osg::depends_on<OpenThreads::Mutex*, osg::Referen
             add("RenderBin",new RenderBin(RenderBin::getDefaultRenderBinSortMode()));
             add("StateSortedBin",new RenderBin(RenderBin::SORT_BY_STATE));
             add("DepthSortedBin",new RenderBin(RenderBin::SORT_BACK_TO_FRONT));
+            add("SORT_BACK_TO_FRONT",new RenderBin(RenderBin::SORT_BACK_TO_FRONT));
+            add("SORT_FRONT_TO_BACK",new RenderBin(RenderBin::SORT_FRONT_TO_BACK));
             add("TraversalOrderBin",new RenderBin(RenderBin::TRAVERSAL_ORDER));
         }