diff --git a/applications/osgconv/osgconv.cpp b/applications/osgconv/osgconv.cpp
index ffb28c979..dfcce9e92 100644
--- a/applications/osgconv/osgconv.cpp
+++ b/applications/osgconv/osgconv.cpp
@@ -450,17 +450,13 @@ int main( int argc, char **argv )
         return 1;
     }
 
+#ifndef _WIN32
     std::string options;
     while(arguments.read("--optimizer",options))
     {
-        osg::notify(osg::NOTICE)<<"Setting "<<options<<std::endl;
         setenv("OSG_OPTIMIZER",options.c_str(),1);
-        
-        char* result = getenv("OSG_OPTIMIZER");
-        if (result) osg::notify(osg::NOTICE)<<"Got value "<<result<<std::endl;
-        else osg::notify(osg::NOTICE)<<"No value"<<std::endl;
     }
-
+#endif
 
     FileNameList fileNames;
     OrientationConverter oc;