diff --git a/client/c2c_processor.go b/client/c2c_processor.go
index a6278b25..5888a767 100644
--- a/client/c2c_processor.go
+++ b/client/c2c_processor.go
@@ -1,6 +1,6 @@
 package client
 
-//go:generate go run c2c_switcher.go
+//go:generate go run cmd/c2c_switcher.go
 
 import (
 	"fmt"
diff --git a/client/c2c_switcher.go b/client/cmd/c2c_switcher.go
similarity index 97%
rename from client/c2c_switcher.go
rename to client/cmd/c2c_switcher.go
index 058a6f03..10f49712 100644
--- a/client/c2c_switcher.go
+++ b/client/cmd/c2c_switcher.go
@@ -1,6 +1,3 @@
-//go:build ignore
-// +build ignore
-
 package main
 
 import (
@@ -109,8 +106,8 @@ func main() {
 		panic(err)
 	}
 	source, _ := format.Source(buffer.Bytes())
-	f.Write(source)
-	f.Close()
+	_, _ = f.Write(source)
+	_ = f.Close()
 }
 
 func mustParseInt(s string) int64 {