diff --git a/include/osg/Callback b/include/osg/Callback
index c5a29fc53..1387fce4b 100644
--- a/include/osg/Callback
+++ b/include/osg/Callback
@@ -25,7 +25,7 @@ namespace osg {
 // forward declare
 class CallbackObject;
 class NodeCallback;
-class StateAtteributeCallback;
+class StateAttributeCallback;
 class UniformCallback;
 class DrawableUpdateCallback;
 class DrawableEventCallback;