diff --git a/bot.go b/bot.go
index 030612f..e201944 100644
--- a/bot.go
+++ b/bot.go
@@ -748,6 +748,7 @@ func (bot *BotAPI) RestrictChatMember(config RestrictChatMemberConfig) (APIRespo
 	return bot.MakeRequest("restrictChatMember", v)
 }
 
+// PromoteChatMember add admin rights to user
 func (bot *BotAPI) PromoteChatMember(config PromoteChatMemberConfig) (APIResponse, error) {
 	v := url.Values{}
 
@@ -864,6 +865,9 @@ func (bot *BotAPI) GetInviteLink(config ChatConfig) (string, error) {
 	}
 
 	resp, err := bot.MakeRequest("exportChatInviteLink", v)
+	if err != nil {
+		return "", err
+	}
 
 	var inviteLink string
 	err = json.Unmarshal(resp.Result, &inviteLink)
@@ -871,7 +875,7 @@ func (bot *BotAPI) GetInviteLink(config ChatConfig) (string, error) {
 	return inviteLink, err
 }
 
-// Pin message in supergroup
+// PinChatMessage pin message in supergroup
 func (bot *BotAPI) PinChatMessage(config PinChatMessageConfig) (APIResponse, error) {
 	v, err := config.values()
 	if err != nil {
@@ -883,7 +887,7 @@ func (bot *BotAPI) PinChatMessage(config PinChatMessageConfig) (APIResponse, err
 	return bot.MakeRequest(config.method(), v)
 }
 
-// Unpin message in supergroup
+// UnpinChatMessage unpin message in supergroup
 func (bot *BotAPI) UnpinChatMessage(config UnpinChatMessageConfig) (APIResponse, error) {
 	v, err := config.values()
 	if err != nil {
diff --git a/bot_test.go b/bot_test.go
index a811a27..0fb0855 100644
--- a/bot_test.go
+++ b/bot_test.go
@@ -619,8 +619,8 @@ func TestPinChatMessage(t *testing.T) {
 	message, _ := bot.Send(msg)
 
 	pinChatMessageConfig := tgbotapi.PinChatMessageConfig{
-		ChatID:    message.Chat.ID,
-		MessageID: message.MessageID,
+		ChatID:              message.Chat.ID,
+		MessageID:           message.MessageID,
 		DisableNotification: false,
 	}
 	_, err := bot.PinChatMessage(pinChatMessageConfig)
@@ -640,14 +640,14 @@ func TestUnpinChatMessage(t *testing.T) {
 
 	// We need pin message to unpin something
 	pinChatMessageConfig := tgbotapi.PinChatMessageConfig{
-		ChatID:    message.Chat.ID,
-		MessageID: message.MessageID,
+		ChatID:              message.Chat.ID,
+		MessageID:           message.MessageID,
 		DisableNotification: false,
 	}
 	_, err := bot.PinChatMessage(pinChatMessageConfig)
 
 	unpinChatMessageConfig := tgbotapi.UnpinChatMessageConfig{
-		ChatID:    message.Chat.ID,
+		ChatID: message.Chat.ID,
 	}
 	_, err = bot.UnpinChatMessage(unpinChatMessageConfig)
 
@@ -655,4 +655,4 @@ func TestUnpinChatMessage(t *testing.T) {
 		t.Error(err)
 		t.Fail()
 	}
-}
\ No newline at end of file
+}
diff --git a/types_test.go b/types_test.go
index 62089c4..bb7bb64 100644
--- a/types_test.go
+++ b/types_test.go
@@ -8,7 +8,14 @@ import (
 )
 
 func TestUserStringWith(t *testing.T) {
-	user := tgbotapi.User{0, "Test", "Test", "", "en", false}
+	user := tgbotapi.User{
+		ID:           0,
+		FirstName:    "Test",
+		LastName:     "Test",
+		UserName:     "",
+		LanguageCode: "en",
+		IsBot:        false,
+	}
 
 	if user.String() != "Test Test" {
 		t.Fail()
@@ -16,7 +23,13 @@ func TestUserStringWith(t *testing.T) {
 }
 
 func TestUserStringWithUserName(t *testing.T) {
-	user := tgbotapi.User{0, "Test", "Test", "@test", "en"}
+	user := tgbotapi.User{
+		ID:           0,
+		FirstName:    "Test",
+		LastName:     "Test",
+		UserName:     "@test",
+		LanguageCode: "en",
+	}
 
 	if user.String() != "@test" {
 		t.Fail()