diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 26d254ffc..ffc69cdc2 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -828,6 +828,9 @@ void SDL_SetCurrentDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode
 
 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));
 }