diff --git a/src/osg/Program.cpp b/src/osg/Program.cpp
index 7092a565a..85c49a37d 100644
--- a/src/osg/Program.cpp
+++ b/src/osg/Program.cpp
@@ -517,9 +517,10 @@ void Program::apply( osg::State& state ) const
         // for shader debugging: to minimize performance impact,
         // optionally validate based on notify level.
         // TODO: enable this using notify level, or perhaps its own getenv()?
+#ifndef __APPLE__
         if( osg::isNotifyEnabled(osg::INFO) )
             pcp->validateProgram();
-
+#endif
         pcp->useProgram();
         state.setLastAppliedProgramObject(pcp);
     }