Index: base/setup/usetup/mui.c
===================================================================
--- base/setup/usetup/mui.c	(revision 62518)
+++ base/setup/usetup/mui.c	(working copy)
@@ -461,7 +461,7 @@
         }
         else
         {
-            swprintf(szLangID, L"d%03u%s", uCount, MuiLayouts[uIndex].LangID);
+            swprintf(szLangID, L"d%03lu%s", uCount, MuiLayouts[uIndex].LangID);
             Status = NtSetValueKey(KeyHandle,
                                    &ValueName,
                                    0,