diff --git a/sat/core/xmpp.py b/sat/core/xmpp.py
index d4bfb5c7..ffe0428a 100644
--- a/sat/core/xmpp.py
+++ b/sat/core/xmpp.py
@@ -814,6 +814,7 @@ class SatXMPPClient(SatXMPPEntity, wokkel_client.XMPPClient):
         return self.roster.got_roster
 
     def addPostXmlCallbacks(self, post_xml_treatments):
+        post_xml_treatments.addCallback(self.messageProt.completeAttachments)
         post_xml_treatments.addCallback(self.messageAddToHistory)
         post_xml_treatments.addCallback(self.messageSendToBridge)