Index: src/common/connection.py
===================================================================
--- src/common/connection.py	(revision 14431)
+++ src/common/connection.py	(revision 14476)
@@ -1329,5 +1329,5 @@
                 return True
             i += 1
-        if hasattr(con.Connection, 'ssl_fingerprint_sha1'):
+        if con.Connection.ssl_fingerprint_sha1:
             saved_fingerprint = gajim.config.get_per('accounts', self.name,
                 'ssl_fingerprint_sha1')