diff --git a/nav2_costmap_2d/test/integration/test_costmap_topic_collision_checker.cpp b/nav2_costmap_2d/test/integration/test_costmap_topic_collision_checker.cpp
index ec6748f980e..fbdf47f251b 100644
--- a/nav2_costmap_2d/test/integration/test_costmap_topic_collision_checker.cpp
+++ b/nav2_costmap_2d/test/integration/test_costmap_topic_collision_checker.cpp
@@ -97,6 +97,7 @@ class TestCollisionChecker : public nav2_util::LifecycleNode
     global_frame_("map")
   {
     // Declare non-plugin specific costmap parameters
+    declare_parameter("__parent_namespace", rclcpp::ParameterValue(std::string("/")));
     declare_parameter("map_topic", rclcpp::ParameterValue(std::string("map")));
     declare_parameter("track_unknown_space", rclcpp::ParameterValue(true));
     declare_parameter("use_maximum", rclcpp::ParameterValue(false));