diff --git a/kadmin/check.c b/kadmin/check.c
index f4f2034dc..ad14ed224 100644
--- a/kadmin/check.c
+++ b/kadmin/check.c
@@ -88,9 +88,9 @@ do_check_entry(krb5_principal principal, void *data)
 				   &keysize);
 	if (ret == 0 && keysize != (size_t)princ.key_data[i].key_data_length[0]) {
 	    krb5_warnx(context,
-		       "Principal %s enctype %d, wrong length: %lu\n",
+		       "Principal %s enctype %d, wrong length: %d\n",
 		       name, princ.key_data[i].key_data_type[0],
-		       (unsigned long)princ.key_data[i].key_data_length);
+		       princ.key_data[i].key_data_length[0]);
 	}
     }