diff --git a/stepmania/src/arch/LoadingWindow/LoadingWindow_Win32.cpp b/stepmania/src/arch/LoadingWindow/LoadingWindow_Win32.cpp
index 6322e4a06b..4801e0bac7 100644
--- a/stepmania/src/arch/LoadingWindow/LoadingWindow_Win32.cpp
+++ b/stepmania/src/arch/LoadingWindow/LoadingWindow_Win32.cpp
@@ -23,9 +23,10 @@ static HBITMAP LoadWin32Surface( RageSurface *&s )
 	RageSurfaceUtils::ConvertSurface( s, s->w, s->h, 32, 0xFF000000, 0x00FF0000, 0x0000FF00, 0 );
 
 	HDC hScreen = GetDC(NULL);
+	ASSERT_M( hScreen, werr_ssprintf(GetLastError(), "hScreen") );
 
 	HBITMAP bitmap = CreateCompatibleBitmap( hScreen, s->w, s->h );
-	ASSERT( bitmap );
+	ASSERT_M( bitmap, werr_ssprintf(GetLastError(), "CreateCompatibleBitmap") );
 
 	HDC BitmapDC = CreateCompatibleDC( hScreen );
 	SelectObject( BitmapDC, bitmap );