Index: head/sys/kern/subr_acl_nfs4.c
===================================================================
--- head/sys/kern/subr_acl_nfs4.c
+++ head/sys/kern/subr_acl_nfs4.c
@@ -342,9 +342,9 @@
 }
 
 static struct acl_entry *
-_acl_duplicate_entry(struct acl *aclp, int entry_index)
+_acl_duplicate_entry(struct acl *aclp, unsigned entry_index)
 {
-	int i;
+	unsigned i;
 
 	KASSERT(aclp->acl_cnt + 1 <= ACL_MAX_ENTRIES,
 	    ("aclp->acl_cnt + 1 <= ACL_MAX_ENTRIES"));
@@ -361,7 +361,8 @@
 acl_nfs4_sync_acl_from_mode_draft(struct acl *aclp, mode_t mode,
     int file_owner_id)
 {
-	int i, meets, must_append;
+	int meets, must_append;
+	unsigned i;
 	struct acl_entry *entry, *copy, *previous,
 	    *a1, *a2, *a3, *a4, *a5, *a6;
 	mode_t amode;