diff --git a/docs/cn/server.md b/docs/cn/server.md
index 5e648661e4..9606ab1d40 100644
--- a/docs/cn/server.md
+++ b/docs/cn/server.md
@@ -1041,7 +1041,7 @@ public:
     // Get `RpcPBMessages' according to `service' and `method'.
     // Common practice to create protobuf message:
     // service.GetRequestPrototype(&method).New() -> request;
-    // service.GetRequestPrototype(&method).New() -> response.
+    // service.GetResponsePrototype(&method).New() -> response.
     virtual RpcPBMessages* Get(const ::google::protobuf::Service& service,
                                const ::google::protobuf::MethodDescriptor& method) = 0;
     // Return `RpcPBMessages' to factory.
diff --git a/docs/en/server.md b/docs/en/server.md
index 65fe984788..1c2923a6b3 100644
--- a/docs/en/server.md
+++ b/docs/en/server.md
@@ -1035,7 +1035,7 @@ public:
     // Get `RpcPBMessages' according to `service' and `method'.
     // Common practice to create protobuf message:
     // service.GetRequestPrototype(&method).New() -> request;
-    // service.GetRequestPrototype(&method).New() -> response.
+    // service.GetResponsePrototype(&method).New() -> response.
     virtual RpcPBMessages* Get(const ::google::protobuf::Service& service,
                                const ::google::protobuf::MethodDescriptor& method) = 0;
     // Return `RpcPBMessages' to factory.
diff --git a/src/brpc/rpc_pb_message_factory.h b/src/brpc/rpc_pb_message_factory.h
index 22d39671ed..52787be1e4 100644
--- a/src/brpc/rpc_pb_message_factory.h
+++ b/src/brpc/rpc_pb_message_factory.h
@@ -44,7 +44,7 @@ class RpcPBMessageFactory {
     // Get `RpcPBMessages' according to `service' and `method'.
     // Common practice to create protobuf message:
     // service.GetRequestPrototype(&method).New() -> request;
-    // service.GetRequestPrototype(&method).New() -> response.
+    // service.GetResponsePrototype(&method).New() -> response.
     virtual RpcPBMessages* Get(const ::google::protobuf::Service& service,
                                const ::google::protobuf::MethodDescriptor& method) = 0;
     // Return `RpcPBMessages' to factory.