diff --git a/src/msw/dib.cpp b/src/msw/dib.cpp
index 7340494bae..f2e396eb85 100644
--- a/src/msw/dib.cpp
+++ b/src/msw/dib.cpp
@@ -619,6 +619,9 @@ static BOOL PASCAL MakeBitmapAndPalette(HDC hDC, HANDLE hDIB,
             result = TRUE;
         }
     }
+
+	GlobalUnlock (hDIB);  // glt
+
     return(result);
 }