diff --git a/src/dd.c b/src/dd.c
index 2c5d822..961cbea 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -849,6 +849,11 @@ HRESULT dd_SetCooperativeLevel(HWND hwnd, DWORD dwFlags)
         }
     }
 
+    if (!(dwFlags & DDSCL_FULLSCREEN))
+    {
+        dd_SetDisplayMode(640, 480, 8, SDM_MODE_SET_BY_GAME);
+    }
+
     return DD_OK;
 }