diff --git a/res/res_timing_pthread.c b/res/res_timing_pthread.c
index 81efbf8e7c..1e76720ecd 100644
--- a/res/res_timing_pthread.c
+++ b/res/res_timing_pthread.c
@@ -143,7 +143,7 @@ static void *pthread_timer_open(void)
 		ast_cond_signal(&timing_thread.cond);
 		ast_mutex_unlock(&timing_thread.lock);
 	}
-	ao2_link(pthread_timers, timer);
+	ao2_link_flags(pthread_timers, timer, OBJ_NOLOCK);
 	ao2_unlock(pthread_timers);
 
 	return timer;
@@ -153,6 +153,7 @@ static void pthread_timer_close(void *data)
 {
 	struct pthread_timer *timer = data;
 
+	ao2_unlink(pthread_timers, timer);
 	ao2_ref(timer, -1);
 }