diff --git a/trytond/bus.py b/trytond/bus.py
index b2869dcdc8..2c07a22d97 100644
--- a/trytond/bus.py
+++ b/trytond/bus.py
@@ -149,12 +149,11 @@ class LongPollingBus:
             raise NotImplementedException
 
         logger.info("listening on channel '%s'", cls._channel)
-        conn = db.get_connection()
+        conn = db.get_connection(autocommit=True)
         pid = os.getpid()
         try:
             cursor = conn.cursor()
             cursor.execute('LISTEN "%s"' % cls._channel)
-            conn.commit()
 
             cls._messages[database] = messages = _MessageQueue(_cache_timeout)
 
diff --git a/trytond/cache.py b/trytond/cache.py
index 2f39d06134..489454fd88 100644
--- a/trytond/cache.py
+++ b/trytond/cache.py
@@ -293,13 +293,12 @@ class MemoryCache(BaseCache):
             raise NotImplementedError
 
         logger.info("listening on channel '%s' of '%s'", cls._channel, dbname)
-        conn = database.get_connection()
+        conn = database.get_connection(autocommit=True)
         pid = os.getpid()
         current_thread = threading.current_thread()
         try:
             cursor = conn.cursor()
             cursor.execute('LISTEN "%s"' % cls._channel)
-            conn.commit()
 
             while cls._listener.get((pid, dbname)) == current_thread:
                 readable, _, _ = select.select([conn], [], [])