diff --git a/cim-client-sdk/src/main/java/com/crossoverjie/cim/client/sdk/io/backoff/RandomBackoff.java b/cim-client-sdk/src/main/java/com/crossoverjie/cim/client/sdk/io/backoff/RandomBackoff.java
index 89d663b1..de958b4e 100644
--- a/cim-client-sdk/src/main/java/com/crossoverjie/cim/client/sdk/io/backoff/RandomBackoff.java
+++ b/cim-client-sdk/src/main/java/com/crossoverjie/cim/client/sdk/io/backoff/RandomBackoff.java
@@ -12,8 +12,7 @@ public class RandomBackoff implements BackoffStrategy {
 
     @Override
     public long nextBackoff() {
-        int random = (int) (Math.random() * 7 + 3);
-        return random;
+        return (int) (Math.random() * 7 + 3);
     }
 
 }