diff --git a/TelegramBotBase/Base/MessageResult.cs b/TelegramBotBase/Base/MessageResult.cs
index 7dec05f..879a5a6 100644
--- a/TelegramBotBase/Base/MessageResult.cs
+++ b/TelegramBotBase/Base/MessageResult.cs
@@ -64,7 +64,7 @@ namespace TelegramBotBase.Base
         {
             get
             {
-                return this.RawCallbackData.CallbackQuery.Data;
+                return this.RawCallbackData?.CallbackQuery?.Data;
             }
         }
 
diff --git a/TelegramBotBase/Sessions/DeviceSession.cs b/TelegramBotBase/Sessions/DeviceSession.cs
index 37c11f3..e358d1f 100644
--- a/TelegramBotBase/Sessions/DeviceSession.cs
+++ b/TelegramBotBase/Sessions/DeviceSession.cs
@@ -7,6 +7,7 @@ using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Telegram.Bot.Exceptions;
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
 using Telegram.Bot.Types.InputFiles;
@@ -296,7 +297,7 @@ namespace TelegramBotBase.Sessions
 
                 return true;
             }
-            catch
+            catch(ApiRequestException ex)
             {
 
             }
@@ -304,6 +305,16 @@ namespace TelegramBotBase.Sessions
             return false;
         }
 
+        /// <summary>
+        /// Löscht die aktuelle Nachricht, oder die übergebene
+        /// </summary>
+        /// <param name="messageId"></param>
+        /// <returns></returns>
+        public virtual async Task<bool> DeleteMessage(Message message)
+        {
+            return await DeleteMessage(message.MessageId);
+        }
+
 
         public event EventHandler<MessageSentEventArgs> MessageSent
         {