diff --git a/src/osgUtil/Simplifier.cpp b/src/osgUtil/Simplifier.cpp
index da3cf36e4..383f15cb6 100644
--- a/src/osgUtil/Simplifier.cpp
+++ b/src/osgUtil/Simplifier.cpp
@@ -24,9 +24,9 @@
 using namespace osgUtil;
 
 
+template<class T>
 struct dereference_less
 {
-    template<class T>
     inline bool operator() (const T& lhs,const T& rhs) const
     {
         return *lhs < *rhs;
@@ -189,13 +189,13 @@ public:
 
     void copyBackToGeometry();
 
-    typedef std::vector<float>                              FloatList;
-    typedef std::set<osg::ref_ptr<Edge>,dereference_less>   EdgeSet;
-    typedef std::set< osg::ref_ptr<Point>,dereference_less> PointSet;
-    typedef std::vector< osg::ref_ptr<Point> >              PointList;
-    typedef std::list< osg::ref_ptr<Triangle> >             TriangleList;
-    typedef std::set< osg::ref_ptr<Triangle> >              TriangleSet;
-    typedef std::map< osg::ref_ptr<Triangle>, unsigned int, dereference_less > TriangleMap;
+    typedef std::vector<float>                                                                           FloatList;
+    typedef std::set<osg::ref_ptr<Edge>,dereference_less<osg::ref_ptr<Edge> > >                          EdgeSet;
+    typedef std::set< osg::ref_ptr<Point>,dereference_less<osg::ref_ptr<Point> > >                       PointSet;
+    typedef std::vector< osg::ref_ptr<Point> >                                                           PointList;
+    typedef std::list< osg::ref_ptr<Triangle> >                                                          TriangleList;
+    typedef std::set< osg::ref_ptr<Triangle> >                                                           TriangleSet;
+    typedef std::map< osg::ref_ptr<Triangle>, unsigned int, dereference_less<osg::ref_ptr<Triangle> > >  TriangleMap;
 
     struct Point : public osg::Referenced
     {