diff --git a/auth/src/main/java/com/alibaba/nacos/auth/GrpcProtocolAuthService.java b/auth/src/main/java/com/alibaba/nacos/auth/GrpcProtocolAuthService.java
index d0752db21..7e054d824 100644
--- a/auth/src/main/java/com/alibaba/nacos/auth/GrpcProtocolAuthService.java
+++ b/auth/src/main/java/com/alibaba/nacos/auth/GrpcProtocolAuthService.java
@@ -33,7 +33,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 /**
- * Auth Service for Http protocol.
+ * Auth Service for Grpc protocol.
  *
  * @author xiweng.yy
  */