diff --git a/kernel/watch_queue.c b/kernel/watch_queue.c
index dfb3a7e28280..4bcd400984a7 100644
--- a/kernel/watch_queue.c
+++ b/kernel/watch_queue.c
@@ -244,7 +244,7 @@ long watch_queue_set_size(struct pipe_inode_info *pipe, unsigned int nr_notes)
 		goto error;
 	}
 
-	ret = pipe_resize_ring(pipe, nr_notes);
+	ret = pipe_resize_ring(pipe, roundup_pow_of_two(nr_notes));
 	if (ret < 0)
 		goto error;