diff --git a/cat-home/src/main/java/com/dianping/cat/report/task/transaction/HistoryTransactionReportMerger.java b/cat-home/src/main/java/com/dianping/cat/report/task/transaction/HistoryTransactionReportMerger.java
index d71d5d7aef6ebc73089d93dd73d3b4056de7ac4c..882834c7ec945ae4960dc44e83de3af070d677bc 100644
--- a/cat-home/src/main/java/com/dianping/cat/report/task/transaction/HistoryTransactionReportMerger.java
+++ b/cat-home/src/main/java/com/dianping/cat/report/task/transaction/HistoryTransactionReportMerger.java
@@ -17,7 +17,6 @@ public class HistoryTransactionReportMerger extends TransactionReportMerger {
 
 		other.getDurations().clear();
 		other.getRanges().clear();
-
 		super.mergeName(old, other);
 	}