diff --git a/gdk/x11/gdkglcontext-x11.c b/gdk/x11/gdkglcontext-x11.c
index b4e4e57b40..4fe2936f25 100644
--- a/gdk/x11/gdkglcontext-x11.c
+++ b/gdk/x11/gdkglcontext-x11.c
@@ -875,9 +875,6 @@ gdk_x11_display_make_gl_context_current (GdkDisplay   *display,
         glXSwapIntervalSGI (0);
     }
 
-  /* TODO: Is this needed? */
-  XSync (dpy, False);
-
   if (gdk_x11_display_error_trap_pop (display))
     {
       g_critical ("X Error received while calling glXMakeContextCurrent()");