1 files changed, 1 insertions, 1 deletions
diff --git a/js/src/Ice/BasicStream.js b/js/src/Ice/BasicStream.js
index f3f04408b7e..6e269f8feb6 100644
--- a/js/src/Ice/BasicStream.js
+++ b/js/src/Ice/BasicStream.js
@@ -2572,7 +2572,7 @@ var BasicStream = Class({
         //
         this._readEncapsStack.decoder.readObject.call(
             this._readEncapsStack.decoder,
-            function(obj){
+            patcher === null ? null : function(obj){
                 if(obj !== null && !(obj.ice_instanceof(T)))
                 {
                     ExUtil.throwUOE(T.ice_staticId(), obj);