diff --git a/src/caosdb/configuration.py b/src/caosdb/configuration.py
index 085ddff7fd9919d35379a1ff6a6fe09146493d89..4d0797844182b8465ef5f97a869e31ee4fcaf47d 100644
--- a/src/caosdb/configuration.py
+++ b/src/caosdb/configuration.py
@@ -35,7 +35,7 @@ def _reset_config():
 
 
 def configure(inifile):
-    """ read config from file.
+    """read config from file.
 
     Return a list of files which have successfully been parsed.
     """
diff --git a/unittests/test_configuration.py b/unittests/test_configuration.py
index 6db63f6cf4839c6d4a606bda43c010e11c7b5451..76445b6f262120d6a29c73527a9bf042f85f8a05 100644
--- a/unittests/test_configuration.py
+++ b/unittests/test_configuration.py
@@ -25,6 +25,7 @@
 import caosdb as db
 from pytest import raises
 
+
 def test_config_ini_via_envvar():
     from os import environ
     from os.path import expanduser