diff --git a/module/scripts/item-systems/item-system.js b/module/scripts/item-systems/item-system.js
index aa7a57f..b64f9cf 100644
--- a/module/scripts/item-systems/item-system.js
+++ b/module/scripts/item-systems/item-system.js
@@ -230,7 +230,7 @@ export default class ItemSystem {
     };
     for (let item of items) {
       let thisItemUses = await this.calculateUsesForItem(item);
-      if (thisItemUses === null) {
+      if (!thisItemUses) {
         uses = null;
         break;
       }
diff --git a/module/scripts/item-systems/pf1.js b/module/scripts/item-systems/pf1.js
index 47a7786..54d205f 100644
--- a/module/scripts/item-systems/pf1.js
+++ b/module/scripts/item-systems/pf1.js
@@ -72,6 +72,7 @@ async function calculateActionUses(item, action) {
       isAmmunition: true,
     };
   }
+  return null
 }
 
 async function calculateChargeUses(item) {