diff --git a/core/src/main/java/com/taobao/arthas/core/command/monitor200/PerfCounterCommand.java b/core/src/main/java/com/taobao/arthas/core/command/monitor200/PerfCounterCommand.java
index 6980c4cd3..36e313315 100644
--- a/core/src/main/java/com/taobao/arthas/core/command/monitor200/PerfCounterCommand.java
+++ b/core/src/main/java/com/taobao/arthas/core/command/monitor200/PerfCounterCommand.java
@@ -30,7 +30,7 @@ import sun.management.counter.perf.PerfInstrumentation;
  * @author hengyunabc 2020-02-16
  */
 @Name("perfcounter")
-@Summary("Display the perf counter infornation.")
+@Summary("Display the perf counter information.")
 @Description("\nExamples:\n" +
         "  perfcounter\n" +
         "  perfcounter -d\n" +
diff --git a/tutorials/katacoda/command-perfcounter-cn/perfcounter.md b/tutorials/katacoda/command-perfcounter-cn/perfcounter.md
index 202d716dc..32acec69a 100644
--- a/tutorials/katacoda/command-perfcounter-cn/perfcounter.md
+++ b/tutorials/katacoda/command-perfcounter-cn/perfcounter.md
@@ -8,7 +8,7 @@
    perfcounter [-d] [-h]
 
  SUMMARY:
-   Display the perf counter infornation.
+   Display the perf counter information.
 
  Examples:
    perfcounter
diff --git a/tutorials/katacoda/command-perfcounter-en/perfcounter.md b/tutorials/katacoda/command-perfcounter-en/perfcounter.md
index ca2564c82..7ff4b33f8 100644
--- a/tutorials/katacoda/command-perfcounter-en/perfcounter.md
+++ b/tutorials/katacoda/command-perfcounter-en/perfcounter.md
@@ -8,7 +8,7 @@ Check the current JVM Perf Counter information.
    perfcounter [-d] [-h]
 
  SUMMARY:
-   Display the perf counter infornation.
+   Display the perf counter information.
 
  Examples:
    perfcounter