diff --git a/cassandra/concurrent.py b/cassandra/concurrent.py
index 0e7bf794e0..6cf4e0df57 100644
--- a/cassandra/concurrent.py
+++ b/cassandra/concurrent.py
@@ -143,7 +143,7 @@ def _execute(self, idx, statement, params):
             while self._pending_executions:
                 p_idx, p_statement, p_params = self._pending_executions.pop(0)
                 try:
-                    future = self.session.execute_async(p_statement, p_params, timeout=None, execution_profile=self._execution_profile)
+                    future = self.session.execute_async(p_statement, p_params, execution_profile=self._execution_profile)
                     args = (future, p_idx)
                     future.add_callbacks(
                         callback=self._on_success, callback_args=args,