diff --git a/main/utils.c b/main/utils.c
index c1d1cb592..e67bdea10 100644
--- a/main/utils.c
+++ b/main/utils.c
@@ -915,7 +915,7 @@ static char *handle_show_locks(struct ast_cli_entry *e, int cmd, struct ast_cli_
 	AST_LIST_TRAVERSE(&lock_infos, lock_info, entry) {
 		int i;
 		if (lock_info->num_locks) {
-			ast_str_append(&str, 0, "=== Thread ID: %ld (%s)\n", (long) lock_info->thread_id,
+			ast_str_append(&str, 0, "=== Thread ID: 0x%lx (%s)\n", (long) lock_info->thread_id,
 				lock_info->thread_name);
 			pthread_mutex_lock(&lock_info->lock);
 			for (i = 0; str && i < lock_info->num_locks; i++) {