diff --git a/debian/domcheck.supercheck.cron.d b/debian/domcheck.supercheck.cron.d
index efa5b99..9504d3b 100644
--- a/debian/domcheck.supercheck.cron.d
+++ b/debian/domcheck.supercheck.cron.d
@@ -1 +1,2 @@
+CONTENT_TYPE="text/plain; charset=utf-8"
 45 20 * * * root /usr/sbin/supercheck