diff --git a/src/addons/update.js b/src/addons/update.js
index 23e6b36a003ff..5af926338d66c 100644
--- a/src/addons/update.js
+++ b/src/addons/update.js
@@ -89,6 +89,7 @@ function update(value, spec) {
 
   // not created unless needed
   var nextValue;
+  var updatedProp;
 
   /* get a clone of value, create if not present */
   function getNextValue() {
@@ -168,17 +169,17 @@ function update(value, spec) {
       spec[COMMAND_APPLY]
     );
 
-    var updated = spec[COMMAND_APPLY](getCurrentValue());
-    if (updated !== getCurrentValue()) {
-      nextValue = updated;
+    updatedProp = spec[COMMAND_APPLY](getCurrentValue());
+    if (updatedProp !== getCurrentValue()) {
+      nextValue = updatedProp;
     }
   }
 
   for (var k in spec) {
     if (!(ALL_COMMANDS_SET.hasOwnProperty(k) && ALL_COMMANDS_SET[k])) {
-      var updated = update(value[k], spec[k]);
-      if (updated !== value[k]) {
-        getNextValue()[k] = updated;
+      updatedProp = update(value[k], spec[k]);
+      if (updatedProp !== value[k]) {
+        getNextValue()[k] = updatedProp;
       }
     }
   }