diff --git a/launch/display.launch.py b/launch/display.launch.py
index e64f80e..c0d75b5 100644
--- a/launch/display.launch.py
+++ b/launch/display.launch.py
@@ -17,8 +17,8 @@
 from launch import LaunchDescription
 from launch.actions import DeclareLaunchArgument
 from launch.conditions import IfCondition
-from launch_ros.actions import Node, PushRosNamespace
 from launch.substitutions import LaunchConfiguration
+from launch_ros.actions import Node, PushRosNamespace
 from raspimouse_description.robot_description_loader import RobotDescriptionLoader
 
 
diff --git a/test/test_robot_description_loader.py b/test/test_robot_description_loader.py
index e7dc196..b3e26d6 100644
--- a/test/test_robot_description_loader.py
+++ b/test/test_robot_description_loader.py
@@ -21,8 +21,9 @@
 
 import math
 
-import pytest
 from launch.launch_context import LaunchContext
+import pytest
+
 from raspimouse_description.robot_description_loader import \
     RobotDescriptionLoader