diff --git a/en/installation/installation-1.13/sems.rst b/en/installation/installation-1.13/sems.rst
index bbe13b4..7e5e90c 100644
--- a/en/installation/installation-1.13/sems.rst
+++ b/en/installation/installation-1.13/sems.rst
@@ -161,6 +161,7 @@ Replace <SIGNALLING_IP>, <MEDIA_IP> with correct values for your server :
                 schema = switch21
                 function = route_release
                 init = init
+                pass_input_interface_name = true
                 master_pool {
                     host = 127.0.0.1
                     port = 5432