diff --git a/gajim/common/app.py b/gajim/common/app.py
index 6fe8ce60b..3c02570f9 100644
--- a/gajim/common/app.py
+++ b/gajim/common/app.py
@@ -148,6 +148,7 @@ socks5queue = None
 gupnp_igd = None
 
 gajim_identity = {'type': 'pc', 'category': 'client', 'name': 'Gajim'}
+
 gajim_common_features = [nbxmpp.NS_BYTESTREAM, nbxmpp.NS_SI, nbxmpp.NS_FILE,
     nbxmpp.NS_MUC, nbxmpp.NS_MUC_USER, nbxmpp.NS_MUC_ADMIN, nbxmpp.NS_MUC_OWNER,
     nbxmpp.NS_MUC_CONFIG, nbxmpp.NS_COMMANDS, nbxmpp.NS_DISCO_INFO, 'ipv6',
diff --git a/gajim/common/jingle_session.py b/gajim/common/jingle_session.py
index 32d50d4a6..5f36b925b 100644
--- a/gajim/common/jingle_session.py
+++ b/gajim/common/jingle_session.py
@@ -445,6 +445,8 @@ class JingleSession:
             if child.getName() == 'checksum':
                 hash_ = child.getTag('file').getTag(name='hash',
                                                     namespace=nbxmpp.NS_HASHES_2)
+                if hash_ is None:
+                    continue
                 algo = hash_.getAttr('algo')
                 if algo in nbxmpp.Hashes2.supported:
                     file_props = FilesProp.getFileProp(self.connection.name,