diff --git a/include/osgManipulator/Dragger b/include/osgManipulator/Dragger
index e4908e2ed..3f54f81d8 100644
--- a/include/osgManipulator/Dragger
+++ b/include/osgManipulator/Dragger
@@ -115,7 +115,7 @@ class OSGMANIPULATOR_EXPORT PointerInfo
         osg::Camera* _camera;
 
         IntersectionList _hitList;
-        IntersectionList::iterator _hitIter;
+        IntersectionList::const_iterator _hitIter;
 
         osg::Matrix _MVPW;
         osg::Matrix _inverseMVPW;