diff --git a/bind.go b/bind.go
index b4ce18c..aea40c6 100644
--- a/bind.go
+++ b/bind.go
@@ -306,4 +306,3 @@ func Bind5[In, Out, T, T2, T3, T4, T5 any](
 		return Succeed(anyConsumed, val6, next, MessageOK(s.Pos())), nil
 	}
 }
-
diff --git a/internal/bindgen/bindgen.go b/internal/bindgen/bindgen.go
index 1d5c6fd..e422c73 100644
--- a/internal/bindgen/bindgen.go
+++ b/internal/bindgen/bindgen.go
@@ -1,10 +1,12 @@
 package main
 
 import (
+	"bytes"
 	_ "embed"
 	"errors"
 	"flag"
 	"fmt"
+	"go/format"
 	"os"
 	"strconv"
 	"text/template"
@@ -49,28 +51,28 @@ func run() error {
 	bindTmpl = template.Must(template.New("bind").Parse(bind))
 	seqTmpl = template.Must(template.New("seq").Parse(seq))
 
-	fbind, err := os.OpenFile(*bindPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0777)
-	if err != nil {
-		return err
-	}
-	defer fbind.Close()
-
 	data := File{
 		Package: *pkg,
 		Counter: Counter(*maxBindLen),
 	}
-	err = bindTmpl.Execute(fbind, data)
+	err := genCodeFile(*bindPath, bindTmpl, data)
 	if err != nil {
 		return err
 	}
+	return genCodeFile(*seqPath, seqTmpl, data)
+}
 
-	fseq, err := os.OpenFile(*seqPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0777)
+func genCodeFile(path string, tmpl *template.Template, data any) error {
+	var buf bytes.Buffer
+	err := tmpl.Execute(&buf, data)
 	if err != nil {
 		return err
 	}
-	defer fseq.Close()
-
-	return seqTmpl.Execute(fseq, data)
+	src, err := format.Source(buf.Bytes())
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(path, src, 0777)
 }
 
 type File struct {
diff --git a/seq.go b/seq.go
index ee5da2b..6296d36 100644
--- a/seq.go
+++ b/seq.go
@@ -39,6 +39,7 @@ func Seq2[In, Out, T, T2 any](
 		return Succeed(anyConsumed, final, next, MessageOK(s.Pos())), nil
 	}
 }
+
 func Seq3[In, Out, T, T2, T3 any](
 	p Parser[In, T],
 	p2 Parser[In, T2],
@@ -88,6 +89,7 @@ func Seq3[In, Out, T, T2, T3 any](
 		return Succeed(anyConsumed, final, next, MessageOK(s.Pos())), nil
 	}
 }
+
 func Seq4[In, Out, T, T2, T3, T4 any](
 	p Parser[In, T],
 	p2 Parser[In, T2],
@@ -149,6 +151,7 @@ func Seq4[In, Out, T, T2, T3, T4 any](
 		return Succeed(anyConsumed, final, next, MessageOK(s.Pos())), nil
 	}
 }
+
 func Seq5[In, Out, T, T2, T3, T4, T5 any](
 	p Parser[In, T],
 	p2 Parser[In, T2],
@@ -222,4 +225,3 @@ func Seq5[In, Out, T, T2, T3, T4, T5 any](
 		return Succeed(anyConsumed, final, next, MessageOK(s.Pos())), nil
 	}
 }
-