diff --git a/include/SDL_video.h b/include/SDL_video.h
index 27d8781f31..cc80b14621 100644
--- a/include/SDL_video.h
+++ b/include/SDL_video.h
@@ -60,7 +60,7 @@ typedef struct SDL_DisplayMode
 } SDL_DisplayMode;
 
 /**
- * The type used to identify a window
+ * The opaque type used to identify a window.
  *
  * \sa SDL_CreateWindow
  * \sa SDL_CreateWindowFrom