diff --git a/bot.go b/bot.go
index b88d8db..d56aaf8 100644
--- a/bot.go
+++ b/bot.go
@@ -501,7 +501,10 @@ func (bot *BotAPI) GetUpdatesChan(config UpdateConfig) (UpdatesChannel, error) {
 			}
 
 			for _, update := range updates {
-				ch <- update
+				if update.UpdateID >= config.Offset {
+					config.Offset = update.UpdateID + 1
+					ch <- update
+				}
 			}
 		}
 	}()
diff --git a/passport.go b/passport.go
index 5f55006..f949b88 100644
--- a/passport.go
+++ b/passport.go
@@ -307,7 +307,7 @@ type (
 		MiddleNameNative     string `json:"middle_name_native"`
 	}
 
-	// IDDocumentData https://core.telegram.org/passport#iddocumentdata
+	// IdDocumentData https://core.telegram.org/passport#iddocumentdata
 	IDDocumentData struct {
 		DocumentNumber string `json:"document_no"`
 		ExpiryDate     string `json:"expiry_date"`