diff --git a/applications/osgviewer/osgviewer.cpp b/applications/osgviewer/osgviewer.cpp
index 93c9c11e2..0d737f8ca 100644
--- a/applications/osgviewer/osgviewer.cpp
+++ b/applications/osgviewer/osgviewer.cpp
@@ -47,7 +47,7 @@ public:
             {
                 if (ea.getKey()=='m')
                 {
-#if 1
+#if 0
                     switch(viewer->getThreadingModel())
                     {
                         case(osgViewer::Viewer::SingleThreaded):