diff --git a/reactos/subsys/win32k/dib/dib1bpp.c b/reactos/subsys/win32k/dib/dib1bpp.c
index 77e01a683ea..6854ec957d4 100644
--- a/reactos/subsys/win32k/dib/dib1bpp.c
+++ b/reactos/subsys/win32k/dib/dib1bpp.c
@@ -16,7 +16,7 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* $Id: dib1bpp.c,v 1.22 2004/04/07 16:38:27 weiden Exp $ */
+/* $Id: dib1bpp.c,v 1.23 2004/04/08 15:45:17 navaraf Exp $ */
 
 #undef WIN32_LEAN_AND_MEAN
 #include <windows.h>
@@ -409,7 +409,7 @@ DIB_1BPP_BitBlt(
       }
    }
 
-   RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x31);
+   RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 31);
    SourceY = SourcePoint->y;
    
    for (Y = DestRect->top; Y < DestRect->bottom; Y++)