diff --git a/postgrey.service b/postgrey.service
index 7dd3425..ebd316e 100644
--- a/postgrey.service
+++ b/postgrey.service
@@ -16,7 +16,7 @@ ExecStart=/usr/sbin/postgrey \
  --pidfile=/var/run/postgrey.pid \
  --group=postgrey \
  --user=postgrey \
- --greylist-text="Greylisted for %%s seconds"
+ --greylist-text="Greylisted for %%s seconds" \
  --daemonize \
  $POSTGREY_OPTS