diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index a037ec92881d..12f45dd0f64a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4013,7 +4013,7 @@ static ssize_t peak_write(struct kernfs_open_file *of, char *buf, size_t nbytes,
 			WRITE_ONCE(peer_ctx->value, usage);
 
 	/* initial write, register watcher */
-	if (ofp->value == -1)
+	if (ofp->value == OFP_PEAK_UNSET)
 		list_add(&ofp->list, watchers);
 
 	WRITE_ONCE(ofp->value, usage);