diff --git a/contrib/slapd-modules/smbk5pwd/smbk5pwd.c b/contrib/slapd-modules/smbk5pwd/smbk5pwd.c
index c8537b3f95..1387916697 100644
--- a/contrib/slapd-modules/smbk5pwd/smbk5pwd.c
+++ b/contrib/slapd-modules/smbk5pwd/smbk5pwd.c
@@ -66,7 +66,7 @@ static void smbk5pwd_destroy() {
 #endif
 
 #ifdef DO_SAMBA
-static const char hex[] = "0123456789ABCDEF";
+static const char hex[] = "0123456789abcdef";
 
 /* From liblutil/passwd.c... */
 static void lmPasswd_to_key(