diff --git a/hugegraph-client/src/main/java/org/apache/hugegraph/driver/HugeClient.java b/hugegraph-client/src/main/java/org/apache/hugegraph/driver/HugeClient.java
index 0965e605c..caa48586d 100644
--- a/hugegraph-client/src/main/java/org/apache/hugegraph/driver/HugeClient.java
+++ b/hugegraph-client/src/main/java/org/apache/hugegraph/driver/HugeClient.java
@@ -109,8 +109,8 @@ private void initManagers(RestClient client, String graph) {
 
     private void checkServerApiVersion() {
         VersionUtil.Version apiVersion = VersionUtil.Version.of(this.version.getApiVersion());
-        # TODO: find a way to keep the range of api version correct automatically
-        # 0.81 equals to the {latest_api_version} +10  
+        // TODO: find a way to keep the range of api version correct automatically
+        // 0.81 equals to the {latest_api_version} +10  
         VersionUtil.check(apiVersion, "0.38", "0.81", "hugegraph-api in server");
         this.client.apiVersion(apiVersion);
     }