diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index aa1fee7298..df0ad23511 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -1164,6 +1164,9 @@ const SDL_DisplayMode *SDL_GetClosestFullscreenDisplayMode(SDL_DisplayID display
 
 void SDL_SetDesktopDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode *mode)
 {
+    if (display->desktop_mode.driverdata) {
+        SDL_free(display->desktop_mode.driverdata);
+    }
     SDL_memcpy(&display->desktop_mode, mode, sizeof(*mode));
     display->desktop_mode.displayID = display->id;
     SDL_FinalizeDisplayMode(&display->desktop_mode);