Sync wiki -> header
diff --git a/include/SDL_metal.h b/include/SDL_metal.h
index 9ecaa81..eb30828 100644
--- a/include/SDL_metal.h
+++ b/include/SDL_metal.h
@@ -92,6 +92,7 @@ extern DECLSPEC void *SDLCALL SDL_Metal_GetLayer(SDL_MetalView view);
*
* \param window SDL_Window from which the drawable size should be queried
* \param w Pointer to variable for storing the width in pixels, may be NULL
+ * \param h Pointer to variable for storing the height in pixels, may be NULL
*
* \since This function is available since SDL 2.0.14.
*