diff --git a/lua_modules/http/httpserver.lua b/lua_modules/http/httpserver.lua
index bce4dfb8..7a5f07be 100644
--- a/lua_modules/http/httpserver.lua
+++ b/lua_modules/http/httpserver.lua
@@ -89,7 +89,7 @@ do
       local buf = ""
       local method, url
       local ondisconnect = function(connection)
-        connection.on("sent", nil)
+        connection:on("sent", nil)
         collectgarbage("collect")
       end
       -- header parser