diff --git a/LEGO1/mxdirectdraw.cpp b/LEGO1/mxdirectdraw.cpp
index ab48b636..dbe07d12 100644
--- a/LEGO1/mxdirectdraw.cpp
+++ b/LEGO1/mxdirectdraw.cpp
@@ -808,7 +808,7 @@ BOOL MxDirectDraw::DDSetMode(int width, int height, int bpp)
 
   DDSURFACEDESC ddsd;
 
-  unk1();
+  FUN_1009E020();
 
   if (!GetDDSurfaceDesc(&ddsd, m_pBackBuffer))
   {