diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 58b1015..3d7f492 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -708,6 +708,10 @@
 		m->hw_handler_name = NULL;
 		return -EINVAL;
 	}
+
+	if (hw_argc > 1)
+		DMWARN("Ignoring user-specified arguments for "
+		       "hardware handler \"%s\"", m->hw_handler_name);
 	consume(as, hw_argc - 1);
 
 	return 0;