diff --git a/fs/pnode.c b/fs/pnode.c
index 58933fd..c7221bb 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -310,7 +310,7 @@
 
 	for (m = propagation_next(parent, parent); m;
 	     		m = propagation_next(m, parent)) {
-		child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint, 0);
+		child = __lookup_mnt_last(&m->mnt, mnt->mnt_mountpoint);
 		if (child && list_empty(&child->mnt_mounts) &&
 		    (ret = do_refcount_check(child, 1)))
 			break;
@@ -332,8 +332,8 @@
 	for (m = propagation_next(parent, parent); m;
 			m = propagation_next(m, parent)) {
 
-		struct mount *child = __lookup_mnt(&m->mnt,
-					mnt->mnt_mountpoint, 0);
+		struct mount *child = __lookup_mnt_last(&m->mnt,
+						mnt->mnt_mountpoint);
 		/*
 		 * umount the child only if the child has no
 		 * other children