diff --git a/include/osg/State b/include/osg/State
index 765eab737..d795ae88a 100644
--- a/include/osg/State
+++ b/include/osg/State
@@ -252,7 +252,7 @@ class OSG_EXPORT State : public Referenced
         Polytope getViewFrustum() const;
 
 
-        void setUseVertexAttributeAliasing(bool flag) { _useVertexAttributeAliasing = flag; }
+        void setUseVertexAttributeAliasing(bool flag);
         bool getUseVertexAttributeAliasing() const { return _useVertexAttributeAliasing ; }
 
         typedef std::vector<VertexAttribAlias> VertexAttribAliasList;
diff --git a/src/osg/State.cpp b/src/osg/State.cpp
index c2b72b066..d41cc362d 100644
--- a/src/osg/State.cpp
+++ b/src/osg/State.cpp
@@ -170,6 +170,12 @@ State::~State()
     //_vertexAttribArrayList.clear();
 }
 
+void State::setUseVertexAttributeAliasing(bool flag)
+{
+    _useVertexAttributeAliasing = flag;
+    if (_globalVertexArrayState.valid()) _globalVertexArrayState->assignAllDispatchers();
+}
+
 void State::initializeExtensionProcs()
 {
     if (_extensionProcsInitialized) return;