diff --git a/rclcpp/include/rclcpp/executors/single_threaded_executor.hpp b/rclcpp/include/rclcpp/executors/single_threaded_executor.hpp
index e061ec1..3ea0819 100644
--- a/rclcpp/include/rclcpp/executors/single_threaded_executor.hpp
+++ b/rclcpp/include/rclcpp/executors/single_threaded_executor.hpp
@@ -73,8 +73,6 @@ public:
 private:
   RCLCPP_DISABLE_COPY(SingleThreadedExecutor);
 
-  std::vector<std::weak_ptr<rclcpp::node::Node>> weak_nodes_;
-
 };
 
 } /* namespace single_threaded_executor */