diff --git a/common/src/main/java/org/apache/rocketmq/common/subscription/ExponentialRetryPolicy.java b/common/src/main/java/org/apache/rocketmq/common/subscription/ExponentialRetryPolicy.java
index 04f654a6e63..6f212b591eb 100644
--- a/common/src/main/java/org/apache/rocketmq/common/subscription/ExponentialRetryPolicy.java
+++ b/common/src/main/java/org/apache/rocketmq/common/subscription/ExponentialRetryPolicy.java
@@ -20,9 +20,6 @@
 import com.google.common.base.MoreObjects;
 import java.util.concurrent.TimeUnit;
 
-/**
- * next delay time = min(max, initial * multiplier^reconsumeTimes)
- */
 public class ExponentialRetryPolicy implements RetryPolicy {
     private long initial = TimeUnit.SECONDS.toMillis(5);
     private long max = TimeUnit.HOURS.toMillis(2);