diff --git a/kuka_iiqka_eac_driver/launch/startup.launch.py b/kuka_iiqka_eac_driver/launch/startup.launch.py
index d29a5cea..f4048764 100644
--- a/kuka_iiqka_eac_driver/launch/startup.launch.py
+++ b/kuka_iiqka_eac_driver/launch/startup.launch.py
@@ -172,7 +172,9 @@ def controller_spawner(controller_name, param_file=None, activate=False):
         "event_broadcaster": None,
     }
 
-    controller_spawners = [controller_spawner(name, param_file) for name, param_file in controllers.items()]
+    controller_spawners = [
+        controller_spawner(name, param_file) for name, param_file in controllers.items()
+    ]
 
     nodes_to_start = [
         control_node,
diff --git a/kuka_kss_rsi_driver/launch/startup.launch.py b/kuka_kss_rsi_driver/launch/startup.launch.py
index b6855e15..9d2bea1d 100644
--- a/kuka_kss_rsi_driver/launch/startup.launch.py
+++ b/kuka_kss_rsi_driver/launch/startup.launch.py
@@ -151,7 +151,9 @@ def controller_spawner(controller_name, param_file=None, activate=False):
         "joint_trajectory_controller": jtc_config,
     }
 
-    controller_spawners = [controller_spawner(name, param_file) for name, param_file in controllers.items()]
+    controller_spawners = [
+        controller_spawner(name, param_file) for name, param_file in controllers.items()
+    ]
 
     nodes_to_start = [
         control_node,
diff --git a/kuka_sunrise_fri_driver/launch/startup.launch.py b/kuka_sunrise_fri_driver/launch/startup.launch.py
index 9d2e6691..3f71b605 100644
--- a/kuka_sunrise_fri_driver/launch/startup.launch.py
+++ b/kuka_sunrise_fri_driver/launch/startup.launch.py
@@ -177,7 +177,9 @@ def controller_spawner(controller_name, param_file=None, activate=False):
         "event_broadcaster": None,
     }
 
-    controller_spawners = [controller_spawner(name, param_file) for name, param_file in controllers.items()]
+    controller_spawners = [
+        controller_spawner(name, param_file) for name, param_file in controllers.items()
+    ]
 
     nodes_to_start = [
         control_node,