diff --git a/debian/pmgsync.service b/debian/pmgsync.service
index 8d0ee91..ff74243 100644
--- a/debian/pmgsync.service
+++ b/debian/pmgsync.service
@@ -8,7 +8,7 @@ After=remote-fs.target
 Wants=postgresql.service
 After=postgresql.service
 Before=postfix.service
-Before=postfix@.service
+Before=postfix@-.service
 Before=clamav-daemon.service
 Before=clamav-freshclam.service
 Before=pmgdaemon.service