1 files changed, 1 insertions, 1 deletions
diff --git a/monitor.c b/monitor.c
index 15791f4..5c17910 100644
--- a/monitor.c
+++ b/monitor.c
@@ -469,7 +469,7 @@ static int wait_and_act(struct supertype *container, int nowait)
 		 * problem as there are no active arrays, there is
 		 * nothing that we need to be ready to do.
 		 */
-		int fd = open(container->device_name, O_RDONLY|O_EXCL);
+		int fd = open_dev_excl(container->devnum);
 		if (fd >= 0 || errno != EBUSY) {
 			/* OK, we are safe to leave */
 			if (sigterm && !dirty_arrays)