diff --git a/include/osgUtil/StateGraph b/include/osgUtil/StateGraph
index 66df68b8d..8922a9c16 100644
--- a/include/osgUtil/StateGraph
+++ b/include/osgUtil/StateGraph
@@ -279,7 +279,7 @@ class OSGUTIL_EXPORT StateGraph : public osg::Referenced
             
         }
         
-        inline static int numToPop(osg::State& state,StateGraph* sg_curr)
+        inline static int numToPop(StateGraph* sg_curr)
         {
             int numToPop = 0;
             // need to pop back all statesets and matrices.
diff --git a/src/osgUtil/RenderBin.cpp b/src/osgUtil/RenderBin.cpp
index aead4906f..23ab70c88 100644
--- a/src/osgUtil/RenderBin.cpp
+++ b/src/osgUtil/RenderBin.cpp
@@ -377,7 +377,7 @@ void RenderBin::drawImplementation(osg::RenderInfo& renderInfo,RenderLeaf*& prev
     // osg::notify(osg::NOTICE)<<"begin RenderBin::drawImplementation "<<className()<<" sortMode "<<getSortMode()<<std::endl;
 
 
-    unsigned int numToPop = (previous ? StateGraph::numToPop(state, previous->_parent) : 0);
+    unsigned int numToPop = (previous ? StateGraph::numToPop(previous->_parent) : 0);
     if (numToPop>1) --numToPop;
     unsigned int insertStateSetPosition = state.getStateSetStackSize() - numToPop;