diff --git a/doc.go b/doc.go
index ff81770..6c291e0 100644
--- a/doc.go
+++ b/doc.go
@@ -1,23 +1,22 @@
 // Package autotls support Let's Encrypt for a Go server application.
 //
-// 	package main
+//	package main
 //
-// 	import (
-// 		"log"
+//	import (
+//	  "log"
 //
-// 		"github.com/gin-gonic/autotls"
-// 		"github.com/gin-gonic/gin"
-// 	)
+//	  "github.com/gin-gonic/autotls"
+//	  "github.com/gin-gonic/gin"
+//	)
 //
-// 	func main() {
-// 		r := gin.Default()
+//	func main() {
+//	  r := gin.Default()
 //
-// 		// Ping handler
-// 		r.GET("/ping", func(c *gin.Context) {
-// 			c.String(200, "pong")
-// 		})
-//
-// 		log.Fatal(autotls.Run(r, "example1.com", "example2.com"))
-// 	}
+//	  // Ping handler
+//	  r.GET("/ping", func(c *gin.Context) {
+//	    c.String(200, "pong")
+//	  })
 //
+//	  log.Fatal(autotls.Run(r, "example1.com", "example2.com"))
+//	}
 package autotls