diff --git a/src/gallium/auxiliary/util/u_queue.c b/src/gallium/auxiliary/util/u_queue.c
index 7ecee41bdc9..d0b137826d1 100644
--- a/src/gallium/auxiliary/util/u_queue.c
+++ b/src/gallium/auxiliary/util/u_queue.c
@@ -251,6 +251,7 @@ util_queue_killall_and_wait(struct util_queue *queue)
 
    for (i = 0; i < queue->num_threads; i++)
       pipe_thread_wait(queue->threads[i]);
+   queue->num_threads = 0;
 }
 
 void