diff --git a/core/include/moveit/task_constructor/solvers/pipeline_planner.h b/core/include/moveit/task_constructor/solvers/pipeline_planner.h
index 57d3f5788..3a2bbe0e1 100644
--- a/core/include/moveit/task_constructor/solvers/pipeline_planner.h
+++ b/core/include/moveit/task_constructor/solvers/pipeline_planner.h
@@ -81,7 +81,7 @@ class PipelinePlanner : public PlannerInterface
 	 */
 	PipelinePlanner(const rclcpp::Node::SharedPtr& node,
 	                const std::unordered_map<std::string, std::string>& pipeline_id_planner_id_map,
-	                const std::unordered_map<std::string, planning_pipeline::PlanningPipelinePtr> planning_pipelines =
+	                const std::unordered_map<std::string, planning_pipeline::PlanningPipelinePtr>& planning_pipelines =
 	                    std::unordered_map<std::string, planning_pipeline::PlanningPipelinePtr>(),
 						const moveit::planning_pipeline_interfaces::StoppingCriterionFunction& stopping_criterion_callback = &moveit::planning_pipeline_interfaces::stopAtFirstSolution,
     const moveit::planning_pipeline_interfaces::SolutionSelectionFunction& solution_selection_function = &moveit::planning_pipeline_interfaces::getShortestSolution);
diff --git a/core/src/solvers/pipeline_planner.cpp b/core/src/solvers/pipeline_planner.cpp
index f985d998d..5a701723f 100644
--- a/core/src/solvers/pipeline_planner.cpp
+++ b/core/src/solvers/pipeline_planner.cpp
@@ -67,7 +67,7 @@ PipelinePlanner::PipelinePlanner(const rclcpp::Node::SharedPtr& node, const std:
 
 PipelinePlanner::PipelinePlanner(
     const rclcpp::Node::SharedPtr& node, const std::unordered_map<std::string, std::string>& pipeline_id_planner_id_map,
-    const std::unordered_map<std::string, planning_pipeline::PlanningPipelinePtr> planning_pipelines,
+    const std::unordered_map<std::string, planning_pipeline::PlanningPipelinePtr>& planning_pipelines,
     const moveit::planning_pipeline_interfaces::StoppingCriterionFunction& stopping_criterion_callback,
     const moveit::planning_pipeline_interfaces::SolutionSelectionFunction& solution_selection_function)
   : node_(node)