diff --git a/src/sig.c b/src/sig.c
index bdfc65b4..30924b08 100644
--- a/src/sig.c
+++ b/src/sig.c
@@ -391,9 +391,9 @@ void do_shutdown(shutop_t op)
 	 *  - https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/29187
 	 */
 	sync();
-	run("mount -n -o remount,ro -t dummytype dummydev /", NULL);
-	run("mount -n -o remount,ro dummydev /", NULL);
-	run("mount -n -o remount,ro /", "mount");
+	if (run("mount -n -o remount,ro -t dummytype dummydev /", NULL) &&
+	    run("mount -n -o remount,ro dummydev /", NULL))
+		run("mount -n -o remount,ro /", "mount");
 
 	/* Call mdadm to mark any RAID array(s) as clean before halting. */
 	mdadm_wait();