diff --git a/src/video/SDL_sysvideo.h b/src/video/SDL_sysvideo.h
index 30a69e45a..ec2eaba60 100644
--- a/src/video/SDL_sysvideo.h
+++ b/src/video/SDL_sysvideo.h
@@ -31,7 +31,6 @@ typedef struct SDL_VideoDisplay SDL_VideoDisplay;
 typedef struct SDL_VideoDevice SDL_VideoDevice;
 typedef struct SDL_VideoData SDL_VideoData;
 typedef struct SDL_DisplayData SDL_DisplayData;
-typedef struct SDL_DisplayModeData SDL_DisplayModeData;
 typedef struct SDL_WindowData SDL_WindowData;
 
 typedef struct