diff --git a/src/modules/graphic/osggraph/Viewer/OsgGraphicsWindow.h b/src/modules/graphic/osggraph/Viewer/OsgGraphicsWindow.h
index d9dbdcdce..085545e27 100644
--- a/src/modules/graphic/osggraph/Viewer/OsgGraphicsWindow.h
+++ b/src/modules/graphic/osggraph/Viewer/OsgGraphicsWindow.h
@@ -25,7 +25,7 @@
 
 #include <osgViewer/GraphicsWindow>
 
-namespace OSGUtil
+namespace OSGUtil
 {
 class OsgGraphicsWindowSDL2 : public osgViewer::GraphicsWindow
 {
diff --git a/src/modules/graphic/osggraph/Viewer/OsgScreens.cpp b/src/modules/graphic/osggraph/Viewer/OsgScreens.cpp
index 4a462a53e..50ce6ffdb 100644
--- a/src/modules/graphic/osggraph/Viewer/OsgScreens.cpp
+++ b/src/modules/graphic/osggraph/Viewer/OsgScreens.cpp
@@ -75,7 +75,10 @@ void SDScreens::Init(int x,int y, int width, int height, osg::ref_ptr<osg::Node>
     Camera->setPreDrawCallback(new CameraDrawnCallback);
 #else
     SDL_Window* GfuiWindow = GfScrGetMainWindow();
-	viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
+	//viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
+	//viewer->setThreadingModel(osgViewer::Viewer::CullDrawThreadPerContext);
+	//viewer->setThreadingModel(osgViewer::Viewer::DrawThreadPerContext);
+	viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
 	osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
     SDL_GetWindowPosition(GfuiWindow, &traits->x, &traits->y);
     SDL_GetWindowSize(GfuiWindow, &traits->width, &traits->height);