diff --git a/perception/ground_segmentation/src/ransac_ground_filter_nodelet.cpp b/perception/ground_segmentation/src/ransac_ground_filter_nodelet.cpp
index c1afdf5ca199d..6fed2f5d296a2 100644
--- a/perception/ground_segmentation/src/ransac_ground_filter_nodelet.cpp
+++ b/perception/ground_segmentation/src/ransac_ground_filter_nodelet.cpp
@@ -91,7 +91,7 @@ RANSACGroundFilterComponent::RANSACGroundFilterComponent(const rclcpp::NodeOptio
   min_inliers_ = declare_parameter<int>("min_trial");
   min_points_ = declare_parameter<int>("min_points");
   outlier_threshold_ = declare_parameter<double>("outlier_threshold");
-  plane_slope_threshold_ = declare_parameter(<double>"plane_slope_threshold");
+  plane_slope_threshold_ = declare_parameter<double>("plane_slope_threshold");
   voxel_size_x_ = declare_parameter<double>("voxel_size_x");
   voxel_size_y_ = declare_parameter<double>("voxel_size_y");
   voxel_size_z_ = declare_parameter<double>("voxel_size_z");
diff --git a/perception/ground_segmentation/src/ray_ground_filter_nodelet.cpp b/perception/ground_segmentation/src/ray_ground_filter_nodelet.cpp
index 83e7185f92a15..6134770b3f4b1 100644
--- a/perception/ground_segmentation/src/ray_ground_filter_nodelet.cpp
+++ b/perception/ground_segmentation/src/ray_ground_filter_nodelet.cpp
@@ -58,7 +58,7 @@ RayGroundFilterComponent::RayGroundFilterComponent(const rclcpp::NodeOptions & o
     use_vehicle_footprint_ = declare_parameter<bool>("use_vehicle_footprint");
     general_max_slope_ = declare_parameter<double>("general_max_slope");
     local_max_slope_ = declare_parameter<double>("local_max_slope");
-    initial_max_slope_ = declare_parameter(<double>"initial_max_slope");
+    initial_max_slope_ = declare_parameter<double>("initial_max_slope");
     radial_divider_angle_ = declare_parameter<double>("radial_divider_angle");
     min_height_threshold_ = declare_parameter<double>("min_height_threshold");
     concentric_divider_distance_ = declare_parameter<double>("concentric_divider_distance");