diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/conf/Config.java b/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/conf/Config.java
index affced6f7..6584eea35 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/conf/Config.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/conf/Config.java
@@ -16,7 +16,7 @@ public class Config {
     public static class Agent {
         /**
          * Application code is showed in sky-walking-ui.
-         * Suggestion: set a unique name for each application, one application's nodes share the same code.
+         * Suggestion: set an unique name for each application, one application's nodes share the same code.
          */
         public static String APPLICATION_CODE = "";