diff --git a/src/video/haiku/SDL_bvideo.cc b/src/video/haiku/SDL_bvideo.cc
index a3bf1da74f..ae37a733fb 100644
--- a/src/video/haiku/SDL_bvideo.cc
+++ b/src/video/haiku/SDL_bvideo.cc
@@ -241,6 +241,9 @@ static bool HAIKU_SetRelativeMouseMode(bool enabled)
 
 	SDL_BWin *bewin = _ToBeWin(window);
 	BGLView *_SDL_GLView = bewin->GetGLView();
+    if (_SDL_GLView == NULL) {
+        return false;
+    }
 
 	bewin->Lock();
 	if (enabled)