diff --git a/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerConsumer.java b/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerConsumer.java
index f2ab6b57310..21532cab7e0 100644
--- a/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerConsumer.java
+++ b/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerConsumer.java
@@ -56,7 +56,7 @@ public TimerConsumer(String[] args) {
             System.exit(-1);
         }
 
-        final String namesrvAddr = commandLine.hasOption('n') ? commandLine.getOptionValue('t').trim() : "localhost:9876";
+        final String namesrvAddr = commandLine.hasOption('n') ? commandLine.getOptionValue('n').trim() : "localhost:9876";
         topic = commandLine.hasOption('t') ? commandLine.getOptionValue('t').trim() : "BenchmarkTest";
         System.out.printf("namesrvAddr: %s, topic: %s%n", namesrvAddr, topic);
 
diff --git a/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerProducer.java b/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerProducer.java
index 3e92ff1b0be..4a78e6e338f 100644
--- a/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerProducer.java
+++ b/example/src/main/java/org/apache/rocketmq/example/benchmark/timer/TimerProducer.java
@@ -74,7 +74,7 @@ public TimerProducer(String[] args) {
             System.exit(-1);
         }
 
-        final String namesrvAddr = commandLine.hasOption('n') ? commandLine.getOptionValue('t').trim() : "localhost:9876";
+        final String namesrvAddr = commandLine.hasOption('n') ? commandLine.getOptionValue('n').trim() : "localhost:9876";
         topic = commandLine.hasOption('t') ? commandLine.getOptionValue('t').trim() : "BenchmarkTest";
         threadCount = commandLine.hasOption("tc") ? Integer.parseInt(commandLine.getOptionValue("tc")) : 16;
         messageSize = commandLine.hasOption("ms") ? Integer.parseInt(commandLine.getOptionValue("ms")) : 1024;