diff --git a/servers/slapd/daemon.c b/servers/slapd/daemon.c
index 26e7e67619..8c2dd83efd 100644
--- a/servers/slapd/daemon.c
+++ b/servers/slapd/daemon.c
@@ -2270,9 +2270,9 @@ slap_listener(
 					STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
 					"cn=peercred,cn=external,cn=auth" ) + 1 );
 				authid.bv_len = sprintf( authid.bv_val,
-					"gidNumber=%d+uidNumber=%d,"
+					"gidNumber=%u+uidNumber=%u,"
 					"cn=peercred,cn=external,cn=auth",
-					(int) gid, (int) uid );
+					gid, uid );
 				assert( authid.bv_len <=
 					STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
 					"cn=peercred,cn=external,cn=auth" ) );