diff --git a/pubsub/google/cloud/pubsub_v1/subscriber/_protocol/streaming_pull_manager.py b/pubsub/google/cloud/pubsub_v1/subscriber/_protocol/streaming_pull_manager.py
index 159bdfd8d9e57..68ab452fc5640 100644
--- a/pubsub/google/cloud/pubsub_v1/subscriber/_protocol/streaming_pull_manager.py
+++ b/pubsub/google/cloud/pubsub_v1/subscriber/_protocol/streaming_pull_manager.py
@@ -383,6 +383,7 @@ def open(self, callback, on_callback_error):
             start_rpc=self._client.api.streaming_pull,
             initial_request=self._get_initial_request,
             should_recover=self._should_recover,
+            throttle_reopen=True,
         )
         self._rpc.add_done_callback(self._on_rpc_done)