diff --git a/glx/glxscreens.c b/glx/glxscreens.c
index c4ad42648..ebb9747b4 100644
--- a/glx/glxscreens.c
+++ b/glx/glxscreens.c
@@ -422,4 +422,5 @@ void __glXScreenDestroy(__GLXscreen *screen)
     free(screen->GLXvendor);
     free(screen->GLXextensions);
     free(screen->GLextensions);
+    free(screen->visuals);
 }