diff --git a/common/combat/vulnerable.trait.js b/common/combat/vulnerable.trait.js
index 71dd034..e94c58b 100644
--- a/common/combat/vulnerable.trait.js
+++ b/common/combat/vulnerable.trait.js
@@ -5,6 +5,7 @@ import {
   buildTraversal,
   Context,
 } from '@avocado/behavior';
+import {iterateForEach} from '@avocado/core';
 import {hasGraphics, TextNodeRenderer} from '@avocado/graphics';
 import {randomNumber, Vector} from '@avocado/math';
 
@@ -345,13 +346,7 @@ export class Vulnerable extends Trait {
       this.damageTickingPromises[i].tick(elapsed);
     }
     if (AVOCADO_SERVER) {
-      const keyIterator = this.locks.keys();
-      for (
-        let thisKey = keyIterator.next();
-        thisKey.done !== true;
-        thisKey = keyIterator.next()
-      ) {
-        const {value: key} = thisKey;
+      iterateForEach(this.locks.keys(), (key) => {
         const remaining = this.locks.get(key) - elapsed;
         if (remaining <= 0) {
           this.locks.delete(key);
@@ -359,7 +354,7 @@ export class Vulnerable extends Trait {
         else {
           this.locks.set(key, remaining);
         }
-      }
+      });
     }
   }