diff --git a/Shared/Packet.cs b/Shared/Packet.cs
index bd2e11a78..640b7f0f2 100644
--- a/Shared/Packet.cs
+++ b/Shared/Packet.cs
@@ -99,6 +99,10 @@ namespace BS.Shared
                 {
                     MediaDatei = Convert.FromBase64String(mediaDateiSring);
                 }
+                else
+                {
+                    MediaDatei = null;
+                }
 
                 var chatNameLength    = Convert.ToInt32(chatNameLengthString);
                 var chatMessageLength = Convert.ToInt32(chatMessageLengthString);