--- mstools/samples/rpc/handles/usrdef/usrdefp.c	2018/08/09 18:20:56	1.1
+++ mstools/samples/rpc/handles/usrdef/usrdefp.c	2018/08/09 18:22:04	1.1.1.2
@@ -14,7 +14,7 @@
 #include <rpc.h>
 #include "usrdef.h"
 
-void UsrdefProc(DATA_HANDLE_TYPE d1, char * pszString)
+void UsrdefProc(DATA_HANDLE_TYPE d1, unsigned char * pszString)
 {
     printf("%s\n", pszString);
 }