diff --git a/src/osgManipulator/AntiSquish.cpp b/src/osgManipulator/AntiSquish.cpp
index 9ba61164e..287fba780 100644
--- a/src/osgManipulator/AntiSquish.cpp
+++ b/src/osgManipulator/AntiSquish.cpp
@@ -49,7 +49,7 @@ AntiSquish::~AntiSquish()
 }
 
 
-bool AntiSquish::computeLocalToWorldMatrix(osg::Matrix& matrix,osg::NodeVisitor* nv) const
+bool AntiSquish::computeLocalToWorldMatrix(osg::Matrix& matrix,osg::NodeVisitor* /*nv*/) const
 {
     osg::Matrix unsquishedMatrix;
     if ( !computeUnSquishedMatrix( unsquishedMatrix ) )