diff --git a/conf/mta-sts.txt b/conf/mta-sts.txt
index 26acc015..e7bdc4c4 100644
--- a/conf/mta-sts.txt
+++ b/conf/mta-sts.txt
@@ -1,4 +1,4 @@
-version: STSv1
-mode: MODE
-mx: PRIMARY_HOSTNAME
-max_age: 604800
+version: STSv1
+mode: MODE
+mx: PRIMARY_HOSTNAME
+max_age: 604800