diff --git a/kernel/watch_queue.c b/kernel/watch_queue.c
index 778b4056700f..03b90d7d2175 100644
--- a/kernel/watch_queue.c
+++ b/kernel/watch_queue.c
@@ -270,7 +270,7 @@ long watch_queue_set_size(struct pipe_inode_info *pipe, unsigned int nr_notes)
 		goto error;
 
 	ret = -ENOMEM;
-	pages = kcalloc(sizeof(struct page *), nr_pages, GFP_KERNEL);
+	pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL);
 	if (!pages)
 		goto error;