diff --git a/rest_tools/server/server.py b/rest_tools/server/server.py
index 69ec80b5..eb4e217c 100644
--- a/rest_tools/server/server.py
+++ b/rest_tools/server/server.py
@@ -15,6 +15,7 @@
 
 LOGGER = logging.getLogger()  # this stuff always needs to be logged -> use the 'root' logger
 
+
 def tornado_logger(handler):
     """Log tornado messages to root logger."""
     if handler.get_status() < 400: