@@ -129,19 +129,19 @@
 }
 
 int
 objc_sync_enter(id obj)
 {
-	size_t i;
+	int i;
 
 	if (obj == nil)
 		return 0;
 
 	if (!mutex_lock(&mutex))
 		return 1;
 
-	for (i = 0; i < num_locks; i++) {
+	for (i = num_locks - 1; i >= 0; i--) {
 		if (locks[i].obj == obj) {
 			if (thread_is_current(locks[i].thread))
 				locks[i].recursion++;
 			else {
 				/* Make sure objc_sync_exit doesn't free it */
@@ -213,19 +213,19 @@
 }
 
 int
 objc_sync_exit(id obj)
 {
-	size_t i;
+	int i;
 
 	if (obj == nil)
 		return 0;
 
 	if (!mutex_lock(&mutex))
 		return 1;
 
-	for (i = 0; i < num_locks; i++) {
+	for (i = num_locks - 1; i >= 0; i--) {
 		if (locks[i].obj == obj) {
 			if (locks[i].recursion > 0 &&
 			    thread_is_current(locks[i].thread)) {
 				locks[i].recursion--;