diff --git a/configs/conf-available/05-source-mcast.conf b/configs/conf-available/05-source-mcast.conf
index 0d655f1..cc5ace6 100644
--- a/configs/conf-available/05-source-mcast.conf
+++ b/configs/conf-available/05-source-mcast.conf
@@ -3,4 +3,4 @@ load = libf2b_source_mcast.so
 ; group = 239.255.186.1
 ; port = 3370
 ; bind = 0.0.0.0
-; interface = eth0
+; iface = eth0