diff --git a/nav2_rviz_plugins/src/costmap_cost_tool.cpp b/nav2_rviz_plugins/src/costmap_cost_tool.cpp
index 03435a913e..333f040c94 100644
--- a/nav2_rviz_plugins/src/costmap_cost_tool.cpp
+++ b/nav2_rviz_plugins/src/costmap_cost_tool.cpp
@@ -102,7 +102,7 @@ void CostmapCostTool::callCostService(float x, float y)
   pose.header.stamp = node->now();
   pose.pose.position.x = x;
   pose.pose.position.y = y;
-  request->poses.push_back(pose);
+  request->poses.poses.push_back(pose);
   request->use_footprint = false;
 
   // Call local costmap service