diff --git a/include/osgUtil/TriStripVisitor b/include/osgUtil/TriStripVisitor
index 82905f441..02e7ee516 100644
--- a/include/osgUtil/TriStripVisitor
+++ b/include/osgUtil/TriStripVisitor
@@ -32,7 +32,7 @@ class OSGUTIL_EXPORT TriStripVisitor : public osg::NodeVisitor
     public:
 
         /// default to traversing all children.
-        TriStripVisitor(Optimizer* optimizer=0) : 
+        TriStripVisitor(Optimizer* =0) : 
                 osg::NodeVisitor( osg::NodeVisitor::TRAVERSE_ALL_CHILDREN ), 
                 _cacheSize( 16 ),
                 _minStripSize( 2 ),
diff --git a/src/osgUtil/Simplifier.cpp b/src/osgUtil/Simplifier.cpp
index 098336767..09cad92cb 100644
--- a/src/osgUtil/Simplifier.cpp
+++ b/src/osgUtil/Simplifier.cpp
@@ -1260,7 +1260,7 @@ class CopyPointsToArrayVisitor : public osg::ArrayVisitor
 
 
         template<typename T,typename R>
-        void copy(T& array, R dummy)
+        void copy(T& array, R /*dummy*/)
         {
             array.resize(_pointList.size());