diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
index 943371fd9..55e94bb4f 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
@@ -1738,7 +1738,9 @@ bool CDriverGL::setWindowStyle(EWindowStyle windowStyle)
 	}
 	else if (windowStyle == EWSFullscreen)
 	{
+#ifndef _DEBUG
 		dwNewStyle |= WS_POPUP;
+#endif
 		isVisible = true;
 	}