diff --git a/src/backend/commands/async.c b/src/backend/commands/async.c
index 914388ba715198213ec2f190c2cb50c2495475bd..f2b9a748a622d3790bb9ae1e17e3e1a5eab99576 100644
--- a/src/backend/commands/async.c
+++ b/src/backend/commands/async.c
@@ -1421,7 +1421,7 @@ pg_notification_queue_usage(PG_FUNCTION_ARGS)
 /*
  * Return the fraction of the queue that is currently occupied.
  *
- * The caller must hold AysncQueueLock in (at least) shared mode.
+ * The caller must hold AsyncQueueLock in (at least) shared mode.
  */
 static double
 asyncQueueUsage(void)
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index c0ed637cd2485b7d59aba2608e5b832e1072d1c5..09dc9d473088ca6cb82181a330e871126388c473 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -41,4 +41,5 @@ test: alter-table-1
 test: alter-table-2
 test: alter-table-3
 test: create-trigger
+test: async-notify
 test: timeouts