diff --git a/metrics.lua b/metrics.lua
index bcfe5c0..6c8309b 100644
--- a/metrics.lua
+++ b/metrics.lua
@@ -4,6 +4,7 @@ if not minetest.settings:get_bool("mapgen_helper_record_time", false) then
 	mapgen_helper.record_time = function()
 		return
 	end
+	return
 end
 
 local persist = minetest.settings:get_bool("mapgen_helper_persist_recorded_time", false)