diff --git a/src/osgUtil/tristripper/include/detail/graph_array.h b/src/osgUtil/tristripper/include/detail/graph_array.h
index 51b66c3e3..b844aa554 100644
--- a/src/osgUtil/tristripper/include/detail/graph_array.h
+++ b/src/osgUtil/tristripper/include/detail/graph_array.h
@@ -103,6 +103,8 @@ public:
 
 		value_type		m_Elem;
 		bool			m_Marker;
+        private:
+                node& operator = (const node&) { return *this; }
 	};
 
 
diff --git a/src/osgUtil/tristripper/include/detail/policy.h b/src/osgUtil/tristripper/include/detail/policy.h
index 4c126c598..8a0450e54 100644
--- a/src/osgUtil/tristripper/include/detail/policy.h
+++ b/src/osgUtil/tristripper/include/detail/policy.h
@@ -32,6 +32,7 @@ public:
 	void Challenge(strip Strip, size_t Degree, size_t CacheHits);
 
 private:
+        policy& operator = (const policy&) { return *this; }
 	strip	m_Strip;
 	size_t	m_Degree;
 	size_t	m_CacheHits;