diff --git a/src/glx/x11/glxext.c b/src/glx/x11/glxext.c
index bdc6e31..ed1efc8 100644
--- a/src/glx/x11/glxext.c
+++ b/src/glx/x11/glxext.c
@@ -438,6 +438,8 @@ __glXInitializeVisualConfigFromTags(__GLcontextModes * config, int count,
       case GLX_Y_INVERTED_EXT:
          config->yInverted = *bp++;
          break;
+      case GLX_USE_GL:
+	 break;
       case None:
          i = count;
          break;