diff --git a/src/video/allegro_v.cpp b/src/video/allegro_v.cpp
--- a/src/video/allegro_v.cpp
+++ b/src/video/allegro_v.cpp
@@ -555,4 +555,9 @@ bool VideoDriver_Allegro::ToggleFullscre
 #endif
 }
 
+bool VideoDriver_Allegro::AfterBlitterChange()
+{
+	return CreateMainSurface(_screen.width, _screen.height);
+}
+
 #endif /* WITH_ALLEGRO */