diff --git a/examples/examplepb/a_bit_of_everything.pb.gw.go b/examples/examplepb/a_bit_of_everything.pb.gw.go
index ec3b01490a5..be3ea26b318 100644
--- a/examples/examplepb/a_bit_of_everything.pb.gw.go
+++ b/examples/examplepb/a_bit_of_everything.pb.gw.go
@@ -1,6 +1,5 @@
-// Code generated by protoc-gen-grpc-gateway
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
 // source: examples/examplepb/a_bit_of_everything.proto
-// DO NOT EDIT!
 
 /*
 Package examplepb is a reverse proxy.
diff --git a/examples/examplepb/echo_service.pb.gw.go b/examples/examplepb/echo_service.pb.gw.go
index 9710887fab2..f067c0d9ac6 100644
--- a/examples/examplepb/echo_service.pb.gw.go
+++ b/examples/examplepb/echo_service.pb.gw.go
@@ -1,6 +1,5 @@
-// Code generated by protoc-gen-grpc-gateway
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
 // source: examples/examplepb/echo_service.proto
-// DO NOT EDIT!
 
 /*
 Package examplepb is a reverse proxy.
diff --git a/examples/examplepb/flow_combination.pb.gw.go b/examples/examplepb/flow_combination.pb.gw.go
index 9b1ae373c6e..a71b1867479 100644
--- a/examples/examplepb/flow_combination.pb.gw.go
+++ b/examples/examplepb/flow_combination.pb.gw.go
@@ -1,6 +1,5 @@
-// Code generated by protoc-gen-grpc-gateway
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
 // source: examples/examplepb/flow_combination.proto
-// DO NOT EDIT!
 
 /*
 Package examplepb is a reverse proxy.
diff --git a/examples/examplepb/stream.pb.gw.go b/examples/examplepb/stream.pb.gw.go
index b72b1d15ced..f252bbd35f4 100644
--- a/examples/examplepb/stream.pb.gw.go
+++ b/examples/examplepb/stream.pb.gw.go
@@ -1,6 +1,5 @@
-// Code generated by protoc-gen-grpc-gateway
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
 // source: examples/examplepb/stream.proto
-// DO NOT EDIT!
 
 /*
 Package examplepb is a reverse proxy.
diff --git a/protoc-gen-grpc-gateway/gengateway/template.go b/protoc-gen-grpc-gateway/gengateway/template.go
index b660f16d6e0..d4cb912d65f 100644
--- a/protoc-gen-grpc-gateway/gengateway/template.go
+++ b/protoc-gen-grpc-gateway/gengateway/template.go
@@ -111,9 +111,8 @@ func applyTemplate(p param) (string, error) {
 
 var (
 	headerTemplate = template.Must(template.New("header").Parse(`
-// Code generated by protoc-gen-grpc-gateway
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
 // source: {{.GetName}}
-// DO NOT EDIT!
 
 /*
 Package {{.GoPkg.Name}} is a reverse proxy.