diff --git a/core/portmanager.lua b/core/portmanager.lua
index afcfb797b..8f26c57e8 100644
--- a/core/portmanager.lua
+++ b/core/portmanager.lua
@@ -8,6 +8,8 @@ local set = require "util.set";
 local prosody = prosody;
 local fire_event = prosody.events.fire_event;
 
+module "portmanager";
+
 --- Config
 
 local default_interfaces = { "*" };