diff --git a/docs/README.md b/docs/README.md
index e2ebff2a8e1..00ce0ded75c 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -48,7 +48,7 @@ cd $CELEBORN_HOME
 ./sbin/start-master.sh
 ```
 You should see `Master`'s ip:port in the log:
-```
+```log
 INFO [main] NettyRpcEnvFactory: Starting RPC Server [MasterSys] on 192.168.2.109:9097
 ```
 #### Start Worker
@@ -58,12 +58,12 @@ cd $CELEBORN_HOME
 ./sbin/start-worker.sh celeborn://${Master IP}:${Master Port}
 ```
 You should see the following message in Worker's log:
-```
+```log
 INFO [main] MasterClient: connect to master 192.168.2.109:9097.
 INFO [main] Worker: Register worker successfully.
 ```
 And also the following message in Master's log:
-```
+```log
 INFO [dispatcher-event-loop-9] Master: Registered worker
 Host: 192.168.2.109
 RpcPort: 57806
@@ -104,12 +104,12 @@ spark.sparkContext
   .count
 ```
 During the Spark Job, you should see the following message in Celeborn Master's log:
-```
+```log
 Master: Offer slots successfully for 10 reducers of local-1690000152711-0 on 1 workers.
 ```
 And the following message in Celeborn Worker's log:
-```
+```log
 INFO [dispatcher-event-loop-9] Controller: Reserved 10 primary location and 0 replica location for local-1690000152711-0
-INFO [dispatcher-event-loop-10] Controller: Start commitFiles for local-1690000152711-0
+INFO [dispatcher-event-loop-8] Controller: Start commitFiles for local-1690000152711-0
 INFO [async-reply] Controller: CommitFiles for local-1690000152711-0 success with 10 committed primary partitions, 0 empty primary partitions, 0 failed primary partitions, 0 committed replica partitions, 0 empty replica partitions, 0 failed replica partitions.
 ```