diff --git a/CHANGELOG b/CHANGELOG
index 4c1f565..ad6db7e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -85,6 +85,7 @@ xx/xx/2018 autofs-5.1.5
 - fix incorrect systemctl command syntax in autofs(8).
 - fix direct mount unlink_mount_tree() path.
 - fix unlink mounts umount order.
+- fix incorrect logical compare in unlink_mount_tree().
 
 19/12/2017 autofs-5.1.4
 - fix spec file url.
diff --git a/lib/mounts.c b/lib/mounts.c
index 932cc8f..fb6755c 100644
--- a/lib/mounts.c
+++ b/lib/mounts.c
@@ -959,7 +959,7 @@ int unlink_mount_tree(struct autofs_point *ap, const char *mp)
 		return 0;
 
 	for (mnt = mnts; mnt; mnt = mnt->next) {
-		if (mnt->flags | MNTS_AUTOFS)
+		if (mnt->flags & MNTS_AUTOFS)
 			rv = umount2(mnt->mp, MNT_DETACH);
 		else
 			rv = spawn_umount(ap->logopt, "-l", mnt->mp, NULL);