diff --git a/glx/glxcmds.c b/glx/glxcmds.c
index 73e76ca9f..df738b147 100644
--- a/glx/glxcmds.c
+++ b/glx/glxcmds.c
@@ -1249,7 +1249,8 @@ DoCreateGLXPixmap(ClientPtr client, __GLXscreen * pGlxScreen,
     err = DoCreateGLXDrawable(client, pGlxScreen, config, pDraw, drawableId,
                               glxDrawableId, GLX_DRAWABLE_PIXMAP);
 
-    ((PixmapPtr) pDraw)->refcnt++;
+    if (err == Success)
+        ((PixmapPtr) pDraw)->refcnt++;
 
     return err;
 }