diff --git a/mods/rgt_towns/rgt_towns_core/items.lua b/mods/rgt_towns/rgt_towns_core/items.lua
index fe0d7bd..548a6b7 100644
--- a/mods/rgt_towns/rgt_towns_core/items.lua
+++ b/mods/rgt_towns/rgt_towns_core/items.lua
@@ -70,6 +70,7 @@ end
 
 function ns.check_recipe(inv)
     local plot = ns.recipes[ns.inv_to_string(inv)]
+    if not ns.plots[plot] then return false end
     local recipe = ns.plots[plot].recipe
     print(dump(recipe))
     for i = 1, 9 do