diff --git a/main.go b/main.go
index dabbd10..1e097ab 100644
--- a/main.go
+++ b/main.go
@@ -9,7 +9,7 @@ import (
 	"strings"
 )
 
-var api_token = "421791796:AAE4wPbcqfLP1GNeGR3RTBiyX16fCj3HPAM"
+var apiToken = "421791796:AAE4wPbcqfLP1GNeGR3RTBiyX16fCj3HPAM"
 
 func main() {
 	fmt.Println("vim-go")
@@ -52,8 +52,8 @@ func main() {
 		if update.Message != nil {
 			go sendButtonAndDelete(update.Message.Chat.ID, update.Message.ID, update.Message.Text)
 		} else if update.CallbackQuery != nil {
-			answer_url := fmt.Sprintf("https://api.telegram.org/bot%s/answerCallbackQuery?callback_query_id=%stext=ok", api_token, update.CallbackQuery.ID)
-			resp, err := http.Get(answer_url)
+			answerUrl := fmt.Sprintf("https://api.telegram.org/bot%s/answerCallbackQuery?callback_query_id=%stext=ok", apiToken, update.CallbackQuery.ID)
+			resp, err := http.Get(answerUrl)
 			if err != nil {
 				log.Println(err)
 				return
@@ -70,9 +70,9 @@ func main() {
 	log.Panic(http.ListenAndServe(fmt.Sprintf(":%v", port), nil))
 }
 
-func sendButtonAndDelete(chatId int, messageId int, text string) {
-	url := fmt.Sprintf("https://api.telegram.org/bot%s/sendMessage", api_token)
-	editReqFmt := `
+func sendButtonAndDelete(chatID int, messageID int, text string) {
+	url := fmt.Sprintf("https://api.telegram.org/bot%s/sendMessage", apiToken)
+	sendMsgFmt := `
 			{
 				"chat_id": "%d",
 				"text": "ok",
@@ -85,8 +85,8 @@ func sendButtonAndDelete(chatId int, messageId int, text string) {
 			      ]]
 			}
 			`
-	editReq := fmt.Sprintf(editReqFmt, chatId, text)
-	resp, err := http.Post(url, "application/json", strings.NewReader(editReq))
+	sendMsgReq := fmt.Sprintf(sendMsgFmt, chatID, text)
+	resp, err := http.Post(url, "application/json", strings.NewReader(sendMsgReq))
 	if err != nil {
 		log.Println(err)
 		return
@@ -98,8 +98,8 @@ func sendButtonAndDelete(chatId int, messageId int, text string) {
 		return
 	}
 	log.Println(string(body))
-	delete_url := fmt.Sprintf("https://api.telegram.org/bot%s/deleteMessage?chat_id=%d&message_id=%d", api_token, chatId, messageId)
-	resp, err = http.Get(delete_url)
+	deleteUrl := fmt.Sprintf("https://api.telegram.org/bot%s/deleteMessage?chat_id=%d&message_id=%d", apiToken, chatID, messageID)
+	resp, err = http.Get(deleteUrl)
 	if err != nil {
 		log.Println(err)
 		return