diff --git a/asterix-hyracks-glue/src/main/java/edu/uci/ics/asterix/runtime/transaction/TreeIndexInsertUpdateDeleteOperatorNodePushable.java b/asterix-hyracks-glue/src/main/java/edu/uci/ics/asterix/runtime/transaction/TreeIndexInsertUpdateDeleteOperatorNodePushable.java
index db93be9..1fd8fee 100644
--- a/asterix-hyracks-glue/src/main/java/edu/uci/ics/asterix/runtime/transaction/TreeIndexInsertUpdateDeleteOperatorNodePushable.java
+++ b/asterix-hyracks-glue/src/main/java/edu/uci/ics/asterix/runtime/transaction/TreeIndexInsertUpdateDeleteOperatorNodePushable.java
@@ -101,7 +101,7 @@
     public void open() throws HyracksDataException {
         AbstractTreeIndexOperatorDescriptor opDesc = (AbstractTreeIndexOperatorDescriptor) treeIndexHelper
                 .getOperatorDescriptor();
-        RecordDescriptor inputRecDesc = recordDescProvider.getInputRecordDescriptor(opDesc.getOperatorId(), 0);
+        RecordDescriptor inputRecDesc = recordDescProvider.getInputRecordDescriptor(opDesc.getActivityId(), 0);
         accessor = new FrameTupleAccessor(treeIndexHelper.getHyracksTaskContext().getFrameSize(), inputRecDesc);
         writeBuffer = treeIndexHelper.getHyracksTaskContext().allocateFrame();
         writer.open();