diff --git a/doc/api.md b/doc/api.md
index 0adb3133..f4d6b5a4 100644
--- a/doc/api.md
+++ b/doc/api.md
@@ -205,7 +205,7 @@ Emits `message` when a message arrives.
 | [options.polling] | <code>Boolean</code> \| <code>Object</code> | <code>false</code> | Set true to enable polling or set options.  If a WebHook has been set, it will be deleted automatically. |
 | [options.polling.timeout] | <code>String</code> \| <code>Number</code> | <code>10</code> | *Deprecated. Use `options.polling.params` instead*.  Timeout in seconds for long polling. |
 | [options.testEnvironment] | <code>Boolean</code> | <code>false</code> | Set true to  work with test enviroment. When working with the test environment, you may use HTTP links without TLS to test your Web App. |
-| [options.polling.interval] | <code>String</code> \| <code>Number</code> | <code>300</code> | Interval between requests in miliseconds |
+| [options.polling.interval] | <code>String</code> \| <code>Number</code> | <code>300</code> | Interval between requests in milliseconds |
 | [options.polling.autoStart] | <code>Boolean</code> | <code>true</code> | Start polling immediately |
 | [options.polling.params] | <code>Object</code> |  | Parameters to be used in polling API requests.  See https://core.telegram.org/bots/api#getupdates for more information. |
 | [options.polling.params.timeout] | <code>Number</code> | <code>10</code> | Timeout in seconds for long polling. |
diff --git a/package.json b/package.json
index d3aae127..63f69471 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,8 @@
     "eventemitter3": "^3.0.0",
     "file-type": "^3.9.0",
     "mime": "^1.6.0",
-    "pump": "^2.0.0"
+    "pump": "^2.0.0",
+    "tough-cookie": "~2.5.0"
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",
diff --git a/src/telegram.js b/src/telegram.js
index 306fba00..5e3393d0 100644
--- a/src/telegram.js
+++ b/src/telegram.js
@@ -125,7 +125,7 @@ class TelegramBot extends EventEmitter {
    *  Timeout in seconds for long polling.
    * @param {Boolean} [options.testEnvironment=false] Set true to  work with test enviroment.
    * When working with the test environment, you may use HTTP links without TLS to test your Web App.
-   * @param {String|Number} [options.polling.interval=300] Interval between requests in miliseconds
+   * @param {String|Number} [options.polling.interval=300] Interval between requests in milliseconds
    * @param {Boolean} [options.polling.autoStart=true] Start polling immediately
    * @param {Object} [options.polling.params] Parameters to be used in polling API requests.
    *  See https://core.telegram.org/bots/api#getupdates for more information.
@@ -276,7 +276,7 @@ class TelegramBot extends EventEmitter {
    * @see https://core.telegram.org/bots/api#sendmessage
    */
   _fixReplyParameters(obj) {
-    if (obj.hasOwnProperty('reply_parameters') && typeof obj.reply_parameters !== 'string') {
+    if (Object.prototype.hasOwnProperty.call(obj, 'reply_parameters') && typeof obj.reply_parameters !== 'string') {
       obj.reply_parameters = stringify(obj.reply_parameters);
     }
   }
@@ -765,7 +765,7 @@ class TelegramBot extends EventEmitter {
     const channelPost = update.channel_post;
     const editedChannelPost = update.edited_channel_post;
     const businessConnection = update.business_connection;
-    const businesssMessage = update.business_message;
+    const businessMessage = update.business_message;
     const editedBusinessMessage = update.edited_business_message;
     const deletedBusinessMessage = update.deleted_business_messages;
     const messageReaction = update.message_reaction;
@@ -819,6 +819,7 @@ class TelegramBot extends EventEmitter {
       }
       if (message.reply_to_message) {
         // Only callbacks waiting for this message
+        const listenerIdsToRemove = [];
         this._replyListeners.forEach(reply => {
           // Message from the same chat
           if (reply.chatId === message.chat.id) {
@@ -826,9 +827,15 @@ class TelegramBot extends EventEmitter {
             if (reply.messageId === message.reply_to_message.message_id) {
               // Resolve the promise
               reply.callback(message);
+              // Mark listener for removal to prevent memory leaks
+              listenerIdsToRemove.push(reply.id);
             }
           }
         });
+        // Remove matched listeners
+        listenerIdsToRemove.forEach(id => {
+          this.removeReplyListener(id);
+        });
       }
     } else if (editedMessage) {
       debug('Process Update edited_message %j', editedMessage);
@@ -854,9 +861,9 @@ class TelegramBot extends EventEmitter {
     } else if (businessConnection) {
       debug('Process Update business_connection %j', businessConnection);
       this.emit('business_connection', businessConnection);
-    } else if (businesssMessage) {
-      debug('Process Update business_message %j', businesssMessage);
-      this.emit('business_message', businesssMessage);
+    } else if (businessMessage) {
+      debug('Process Update business_message %j', businessMessage);
+      this.emit('business_message', businessMessage);
     } else if (editedBusinessMessage) {
       debug('Process Update edited_business_message %j', editedBusinessMessage);
       this.emit('edited_business_message', editedBusinessMessage);
@@ -2405,7 +2412,7 @@ class TelegramBot extends EventEmitter {
    */
   unpinAllGeneralForumTopicMessages(chatId, form = {}) {
     form.chat_id = chatId;
-    return this._request('unhideGeneralForumTopic', { form });
+    return this._request('unpinAllGeneralForumTopicMessages', { form });
   }
 
   /**
@@ -3004,7 +3011,7 @@ class TelegramBot extends EventEmitter {
     form.user_id = userId;
     form.name = name;
     form.old_sticker = oldSticker;
-    return this._request('deleteStickerFromSet', { form });
+    return this._request('replaceStickerInSet', { form });
   }
 
 
diff --git a/src/telegramPolling.js b/src/telegramPolling.js
index 9e6cf904..c60f742b 100644
--- a/src/telegramPolling.js
+++ b/src/telegramPolling.js
@@ -122,7 +122,7 @@ class TelegramBotPolling {
         }
         delete err._processing;
         /*
-         * An error occured while processing the items,
+         * An error occurred while processing the items,
          * i.e. in `this.bot.processUpdate()` above.
          * We need to mark the already-processed items
          * to avoid fetching them again once the application
@@ -164,7 +164,7 @@ class TelegramBotPolling {
         if (this._abort) {
           debug('Polling is aborted!');
         } else {
-          debug('setTimeout for %s miliseconds', this.options.interval);
+          debug('setTimeout for %s milliseconds', this.options.interval);
           this._pollingTimeout = setTimeout(() => this._polling(), this.options.interval);
         }
       });