diff --git a/conf.d/03-e2e-policy.cfg.lua b/conf.d/03-e2e-policy.cfg.lua
index 9c96bc7..8859054 100644
--- a/conf.d/03-e2e-policy.cfg.lua
+++ b/conf.d/03-e2e-policy.cfg.lua
@@ -1,4 +1,4 @@
-function splitString (input, sep)
+local splitString = function(input, sep)
     local t={}
     for str in string.gmatch(input, "([^"..sep.."]+)") do
             table.insert(t, str)