diff --git a/src/ray/object_manager/object_store_notification_manager.h b/src/ray/object_manager/object_store_notification_manager.h
index 45d131602..1cac578ae 100644
--- a/src/ray/object_manager/object_store_notification_manager.h
+++ b/src/ray/object_manager/object_store_notification_manager.h
@@ -67,9 +67,9 @@ class ObjectStoreNotificationManager {
 
   plasma::PlasmaClient store_client_;
   int c_socket_;
-  int64_t length_;
-  int64_t num_adds_processed_;
-  int64_t num_removes_processed_;
+  int64_t length_ = 0;
+  int64_t num_adds_processed_ = 0;
+  int64_t num_removes_processed_ = 0;
   std::vector<uint8_t> notification_;
   boost::asio::local::stream_protocol::socket socket_;
 };