diff --git a/apm-protocol/apm-network/src/main/proto/NetworkAddressRegisterService.proto b/apm-protocol/apm-network/src/main/proto/NetworkAddressRegisterService.proto
index 126561c06..15a6b31b0 100644
--- a/apm-protocol/apm-network/src/main/proto/NetworkAddressRegisterService.proto
+++ b/apm-protocol/apm-network/src/main/proto/NetworkAddressRegisterService.proto
@@ -5,7 +5,6 @@ option java_package = "org.apache.skywalking.apm.network.proto";
 
 import "KeyWithIntegerValue.proto";
 
-//register service for ApplicationCode, this service is called when service starts.
 service NetworkAddressRegisterService {
     rpc batchRegister (NetworkAddresses) returns (NetworkAddressMappings) {
     }