diff --git a/packages/state/synchronized.js b/packages/state/synchronized.js
index 2640c25..fe2c4a8 100644
--- a/packages/state/synchronized.js
+++ b/packages/state/synchronized.js
@@ -16,7 +16,7 @@ export function Synchronized(Superclass) {
       this.state = I.Map();
       this._childrenWithState = []
       this._childrenWithoutState = [];
-      this._childrenWithTickers = [];
+      this._childrenTickers = [];
     }
 
     initializeSynchronizedChildren() {
@@ -27,7 +27,7 @@ export function Synchronized(Superclass) {
           'undefined' !== typeof this[key]
           && 'undefined' !== typeof this[key].tick
         ) {
-          this._childrenWithTickers.push(key);
+          this._childrenTickers.push(this[key].tick.bind(this[key]));
         }
         if (
           'undefined' !== typeof this[key]
@@ -84,9 +84,8 @@ export function Synchronized(Superclass) {
     }
 
     tick(elapsed) {
-      for (let i = 0; i < this._childrenWithTickers.length; ++i) {
-        const key = this._childrenWithTickers[i];
-        this[key].tick(elapsed);
+      for (let i = 0; i < this._childrenTickers.length; ++i) {
+        this._childrenTickers[i](elapsed);
       }
       if (AVOCADO_SERVER) {
         this.tickMutateState();