diff --git a/boblibrary/module-functions.lua b/boblibrary/module-functions.lua
index 24fbfa9f6..ef1ce2941 100644
--- a/boblibrary/module-functions.lua
+++ b/boblibrary/module-functions.lua
@@ -14,7 +14,11 @@ end
 function bobmods.lib.module.add_productivity_limitation(recipe)
   if type(recipe) == "string" and data.raw.recipe[recipe] then
     for i, module in pairs(data.raw.module) do
-      if not bobmods.lib.module.excluded_prod_modules[module.name] and module.limitation and module.effect.productivity then
+      if
+        not bobmods.lib.module.excluded_prod_modules[module.name]
+        and module.limitation
+        and module.effect.productivity
+      then
         table.insert(module.limitation, recipe)
       end
     end