diff --git a/cmd/protoc-gen-go-grpc/grpc.go b/cmd/protoc-gen-go-grpc/grpc.go
index 23590caf4203..1b34f856cc63 100644
--- a/cmd/protoc-gen-go-grpc/grpc.go
+++ b/cmd/protoc-gen-go-grpc/grpc.go
@@ -197,10 +197,10 @@ func genService(gen *protogen.Plugin, file *protogen.File, g *protogen.Generated
 		g.P("//")
 		g.P(deprecationComment)
 	}
-	g.Annotate(clientName, service.Location)
+	g.AnnotateSymbol(clientName, protogen.Annotation{Location: service.Location})
 	g.P("type ", clientName, " interface {")
 	for _, method := range service.Methods {
-		g.Annotate(clientName+"."+method.GoName, method.Location)
+		g.AnnotateSymbol(clientName+"."+method.GoName, protogen.Annotation{Location: method.Location})
 		if method.Desc.Options().(*descriptorpb.MethodOptions).GetDeprecated() {
 			g.P(deprecationComment)
 		}
@@ -250,10 +250,10 @@ func genService(gen *protogen.Plugin, file *protogen.File, g *protogen.Generated
 		g.P("//")
 		g.P(deprecationComment)
 	}
-	g.Annotate(serverType, service.Location)
+	g.AnnotateSymbol(serverType, protogen.Annotation{Location: service.Location})
 	g.P("type ", serverType, " interface {")
 	for _, method := range service.Methods {
-		g.Annotate(serverType+"."+method.GoName, method.Location)
+		g.AnnotateSymbol(serverType+"."+method.GoName, protogen.Annotation{Location: method.Location})
 		if method.Desc.Options().(*descriptorpb.MethodOptions).GetDeprecated() {
 			g.P(deprecationComment)
 		}