diff --git a/include/SDL_events.h b/include/SDL_events.h
index 447e5390a..282b9fb76 100644
--- a/include/SDL_events.h
+++ b/include/SDL_events.h
@@ -594,6 +594,9 @@ typedef union SDL_Event
     Uint8 padding[56];
 } SDL_Event;
 
+/* Make sure we haven't broken binary compatibility */
+SDL_COMPILE_TIME_ASSERT(SDL_Event, sizeof(SDL_Event) == 56);
+
 
 /* Function prototypes */