diff --git a/src/video/cocoa/SDL_cocoamodes.m b/src/video/cocoa/SDL_cocoamodes.m
index c8c0322fd..57cc65948 100644
--- a/src/video/cocoa/SDL_cocoamodes.m
+++ b/src/video/cocoa/SDL_cocoamodes.m
@@ -354,7 +354,9 @@ Cocoa_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
             SDL_DisplayMode mode;
             if (GetDisplayMode(_this, moderef, link, &mode)) {
                 CGDisplayModeRetain(moderef);
-                SDL_AddDisplayMode(display, &mode);
+                if (!SDL_AddDisplayMode(display, &mode)) {
+                    SDL_free(mode.driverdata);
+                }
             }
         }