diff --git a/include/osg/BoundingSphere b/include/osg/BoundingSphere
index 5ec81f3eb..0b62c2cdd 100644
--- a/include/osg/BoundingSphere
+++ b/include/osg/BoundingSphere
@@ -44,7 +44,7 @@ class BoundingSphereImpl
         BoundingSphereImpl() : _center(0.0,0.0,0.0),_radius(-1.0) {}
 
         /** Creates a bounding sphere initialized to the given extents. */
-        BoundingSphereImpl(const vec_type& center, value_type radius) : _center(center),_radius(radius) {}
+        BoundingSphereImpl(const vec_type& cntr, value_type rad) : _center(cntr),_radius(rad) {}
 
         /** Creates a bounding sphere initialized to the given extents. */
         BoundingSphereImpl(const BoundingSphereImpl& bs) : _center(bs._center),_radius(bs._radius) {}