1 files changed, 5 insertions, 2 deletions
diff --git a/js/src/Ice/Struct.js b/js/src/Ice/Struct.js
index 2e28ab1bc72..303775fe684 100644
--- a/js/src/Ice/Struct.js
+++ b/js/src/Ice/Struct.js
@@ -163,9 +163,12 @@ Ice.Slice.defineStruct = function(constructor, legalKeyType, writeImpl, readImpl
             }
             v.__write(os);
         };
-        obj.read = function(is)
+        obj.read = function(is, v)
         {
-            var v = new this();
+            if(!v || !(v instanceof this))
+            {
+                v = new this();
+            }
             v.__read(is);
             return v;
         };