diff --git a/docs/serving/samples/grpc-ping-go/proto/ping.pb.go b/docs/serving/samples/grpc-ping-go/proto/ping.pb.go
index 508c4256a..0543a6279 100644
--- a/docs/serving/samples/grpc-ping-go/proto/ping.pb.go
+++ b/docs/serving/samples/grpc-ping-go/proto/ping.pb.go
@@ -5,12 +5,15 @@
 
 package ping
 
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
 import (
+	fmt "fmt"
+
+	proto "github.com/golang/protobuf/proto"
+
+	math "math"
+
 	context "golang.org/x/net/context"
+
 	grpc "google.golang.org/grpc"
 )