diff --git a/CHANGELOG b/CHANGELOG
index 89a8cd4..ae83de7 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -13,6 +13,7 @@
 - refactor umount_multi_triggers().
 - eliminate clean_stale_multi_triggers().
 - simplify mount_subtree() mount check.
+- fix mnts_get_expire_list() expire list construction.
 
 xx/xx/2018 autofs-5.1.5
 - fix flag file permission.
diff --git a/lib/mounts.c b/lib/mounts.c
index 77feeab..505ed06 100644
--- a/lib/mounts.c
+++ b/lib/mounts.c
@@ -1364,6 +1364,9 @@ void mnts_get_expire_list(struct list_head *mnts, struct autofs_point *ap)
 	list_for_each_entry(mnt, &ap->mounts, mount) {
 		struct node *n;
 
+		if (!(mnt->flags & MNTS_MOUNTED))
+			continue;
+
 		__mnts_get_mount(mnt);
 
 		if (!tree) {