diff --git a/src/coffee/models/crafting_plan.coffee b/src/coffee/models/crafting_plan.coffee
index 36b081442..693ead03f 100644
--- a/src/coffee/models/crafting_plan.coffee
+++ b/src/coffee/models/crafting_plan.coffee
@@ -173,8 +173,9 @@ module.exports = class CraftingPlan extends BaseModel
         for i in [@steps.length-1..0] by -1
             step   = @steps[i]
             recipe = step.recipe
+            outputQuantity = recipe.getQuantityProducedOf step.itemSlug
 
-            step.multiplier = Math.ceil(@need.quantityOf(step.itemSlug) / recipe.output[0].quantity)
+            step.multiplier = Math.ceil(@need.quantityOf(step.itemSlug) / outputQuantity)
 
             if @includingTools
                 recipe.eachToolStack (stack)=>