diff --git a/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_forward_position_controller.py b/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_forward_position_controller.py
index 59a39164ec..5cf28ac604 100644
--- a/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_forward_position_controller.py
+++ b/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_forward_position_controller.py
@@ -46,8 +46,8 @@ def __init__(self):
             self.goals.append(float_goal)
 
         self.get_logger().info(
-            f'Publishing {len(goal_names)} goals on topic "{publish_topic}"\
-              every {wait_sec_between_publish} s'
+            f"Publishing {len(goal_names)} goals on topic '{publish_topic}' "
+            f"every {wait_sec_between_publish} s'"
         )
 
         self.publisher_ = self.create_publisher(Float64MultiArray, publish_topic, 1)
diff --git a/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_joint_trajectory_controller.py b/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_joint_trajectory_controller.py
index 4ed198515e..cb66f58468 100644
--- a/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_joint_trajectory_controller.py
+++ b/ros2_controllers_test_nodes/ros2_controllers_test_nodes/publisher_joint_trajectory_controller.py
@@ -129,8 +129,8 @@ def get_sub_param(sub_param):
         publish_topic = "/" + controller_name + "/" + "joint_trajectory"
 
         self.get_logger().info(
-            f'Publishing {len(goal_names)} goals on topic "{publish_topic}" every '
-            "{wait_sec_between_publish} s"
+            f"Publishing {len(goal_names)} goals on topic '{publish_topic}' every "
+            f"{wait_sec_between_publish} s"
         )
 
         self.publisher_ = self.create_publisher(JointTrajectory, publish_topic, 1)