diff --git a/block/mirror.c b/block/mirror.c
index 75874c1806..efec2c7674 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -946,7 +946,6 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
         while (!job_cancel_requested(&s->common.job) && !s->should_complete) {
             job_yield(&s->common.job);
         }
-        s->common.job.cancelled = false;
         goto immediate_exit;
     }
 
@@ -1085,7 +1084,6 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
              * completion.
              */
             assert(QLIST_EMPTY(&bs->tracked_requests));
-            s->common.job.cancelled = false;
             need_drain = false;
             break;
         }
diff --git a/job.c b/job.c
index b0cf2d8374..dbfa67bb0a 100644
--- a/job.c
+++ b/job.c
@@ -217,7 +217,9 @@ const char *job_type_str(const Job *job)
 
 bool job_is_cancelled(Job *job)
 {
-    return job->cancelled && job->force_cancel;
+    /* force_cancel may be true only if cancelled is true, too */
+    assert(job->cancelled || !job->force_cancel);
+    return job->force_cancel;
 }
 
 bool job_cancel_requested(Job *job)