| Index: runtime/observatory/lib/src/service/object.dart | 
| diff --git a/runtime/observatory/lib/src/service/object.dart b/runtime/observatory/lib/src/service/object.dart | 
| index 0eee58f8a2ca4b30ab15fa6483da929c5693d639..e6825786f50c19d78f6a89c78e46cec34b9a391f 100644 | 
| --- a/runtime/observatory/lib/src/service/object.dart | 
| +++ b/runtime/observatory/lib/src/service/object.dart | 
| @@ -936,7 +936,7 @@ class HeapSnapshot { | 
| var result = []; | 
| for (ObjectVertex v in graph.getMostRetained(classId: classId, | 
| limit: limit)) { | 
| -      result.add(isolate.getObjectByAddress(v.address.toRadixString(16)) | 
| +      result.add(isolate.getObjectByAddress(v.address) | 
| .then((ServiceObject obj) { | 
| if (obj is Instance) { | 
| // TODO(rmacnak): size/retainedSize are properties of all heap | 
|  |