diff --git a/core/src/main/java/cn/edu/tsinghua/iot/benchmark/measurement/Measurement.java b/core/src/main/java/cn/edu/tsinghua/iot/benchmark/measurement/Measurement.java
index da66540fb..9f9d43bf0 100644
--- a/core/src/main/java/cn/edu/tsinghua/iot/benchmark/measurement/Measurement.java
+++ b/core/src/main/java/cn/edu/tsinghua/iot/benchmark/measurement/Measurement.java
@@ -56,7 +56,6 @@ public class Measurement {
   private final Map<Operation, Long> failPointNumMap;
   private static final String RESULT_ITEM = "%-25s";
   private static final String LATENCY_ITEM = "%-12s";
-
   /** Precision = 3 / COMPRESSION */
   private static final int COMPRESSION = (int) (300 / config.getRESULT_PRECISION());