diff --git a/src/ddsurface.c b/src/ddsurface.c
index dff34ff..7629875 100644
--- a/src/ddsurface.c
+++ b/src/ddsurface.c
@@ -36,8 +36,19 @@ HRESULT dds_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestRect, LPDIRECTDRAWSUR
 
     dbg_dump_dds_blt_flags(dwFlags);
 
-    if (g_ddraw->iskkndx && (dwFlags & DDBLT_COLORFILL) && lpDestRect && lpDestRect->right == 640 && lpDestRect->bottom == 480)
+    if (g_ddraw->iskkndx && 
+        (dwFlags & DDBLT_COLORFILL) && 
+        lpDestRect && 
+        lpDestRect->right == 640 && 
+        lpDestRect->bottom == 480)
+    {
+        if (This->backbuffer)
+        {
+            dds_Blt(This->backbuffer, lpDestRect, NULL, NULL, dwFlags, lpDDBltFx);
+        }
+
         lpDestRect = NULL;
+    }
 
     RECT src_rect = { 0, 0, src_surface ? src_surface->width : 0, src_surface ? src_surface->height : 0 };
     RECT dst_rect = { 0, 0, This->width, This->height };