diff --git a/include/osgViewer/ViewerEventHandlers b/include/osgViewer/ViewerEventHandlers
index 117fe7dc7..6a926ec67 100644
--- a/include/osgViewer/ViewerEventHandlers
+++ b/include/osgViewer/ViewerEventHandlers
@@ -304,7 +304,6 @@ protected:
         bool            _changeEndBarrierPosition;
 
         osg::Timer_t    _tickOrLastKeyPress;
-        bool            _done;
 };
 
 /**