diff --git a/code/initialise_app.py b/code/initialise_app.py
index e08d952..bd3513b 100644
--- a/code/initialise_app.py
+++ b/code/initialise_app.py
@@ -6,7 +6,8 @@ import os
 
 def initialise_app():
     """
-    Convienience function that ensures eveything is ready before running main loop.
+    Convienience function that ensures eveything is ready
+    before running the main loop.
     """
     # load environment variables from file
     load_dotenv()
@@ -16,7 +17,10 @@ def initialise_app():
     logger_level = os.getenv('LOGGER_LEVEL', default=None)
     if logger_level is None:
         logger_level = 'info'
-        logging.info(f'environment variable LOGGER_LEVEL not set. Using default (info)')
+        logging.info(
+            'environment variable LOGGER_LEVEL not set. '
+            'Using default (info)'
+        )
     level = getattr(logging, logger_level.upper())
     logging.basicConfig(format=fmt, datefmt=datefmt, level=level)
     # setup logging to discord
@@ -24,8 +28,8 @@ def initialise_app():
     assert discord_url is not None
     logger = logging.getLogger()
     discord_handler = DiscordHandler(
-        service_name = 'bandwidth_probing',
-        webhook_url = discord_url,
+        service_name='bandwidth_probing',
+        webhook_url=discord_url,
     )
     discord_handler.setFormatter(logging.Formatter('%(message)s'))
     discord_handler.setLevel(logging.WARNING)
@@ -45,11 +49,14 @@ def initialise_app():
         'TRIGGER_INTERVAL_SECONDS': 60
     }
     for k, v in default_dict.items():
-        if not k in os.environ:
-            logging.info(f'environment variable {k} not set. Using default ({v}).')
+        if k not in os.environ:
+            logging.info(
+                f'environment variable {k} not set. '
+                f'Using default ({v}).'
+            )
             os.environ[k] = str(v)
 
 
 if __name__ == '__main__':
     initialise_app()
-    logging.warning('test message')
\ No newline at end of file
+    logging.warning('test message')