diff --git a/src/video/SDL_shape.c b/src/video/SDL_shape.c
index 6c00a25e3..f3a52ddc6 100644
--- a/src/video/SDL_shape.c
+++ b/src/video/SDL_shape.c
@@ -62,7 +62,7 @@ void SDL_CalculateShapeBitmap(Uint8 alphacutoff,SDL_Surface *shape,Uint8* bitmap
 }
 
 int SDL_SetWindowShape(SDL_Window *window,SDL_Surface *shape,SDL_WindowShapeMode *shapeMode) {
-	if(window == NULL || !SDL_WindowIsShaped(window))
+	if(window == NULL || !SDL_IsShapedWindow(window))
 		//The window given was not a shapeable window.
 		return -2;
 	if(shape == NULL)
diff --git a/src/video/x11/SDL_x11shape.c b/src/video/x11/SDL_x11shape.c
index 9336c18cd..dc0a00522 100644
--- a/src/video/x11/SDL_x11shape.c
+++ b/src/video/x11/SDL_x11shape.c
@@ -20,6 +20,7 @@
     eligottlieb@gmail.com
 */
 
+#include <assert.h>
 #include <X11/extensions/shape.h>
 #include "SDL_x11shape.h"
 #include "SDL_x11window.h"