diff --git a/matcher/error_mail.py b/matcher/error_mail.py
index 45ad845..a7a6563 100644
--- a/matcher/error_mail.py
+++ b/matcher/error_mail.py
@@ -3,13 +3,16 @@ from logging.handlers import SMTPHandler
 from logging import Formatter
 from flask import request
 
-PROJECT = 'osm-wikidata'
+PROJECT = "osm-wikidata"
+
 
 class MatcherSMTPHandler(SMTPHandler):
     def getSubject(self, record):  # noqa: N802
-        return (f'{PROJECT} error: {record.exc_info[0].__name__}'
-                if (record.exc_info and record.exc_info[0])
-                else f'{PROJECT} error: {record.pathname}:{record.lineno:d}')
+        return (
+            f"{PROJECT} error: {record.exc_info[0].__name__}"
+            if (record.exc_info and record.exc_info[0])
+            else f"{PROJECT} error: {record.pathname}:{record.lineno:d}"
+        )
 
 
 class RequestFormatter(Formatter):
@@ -19,9 +22,10 @@ class RequestFormatter(Formatter):
 
 
 def setup_error_mail(app):
-    if not app.config.get('ERROR_MAIL'):
+    if not app.config.get("ERROR_MAIL"):
         return
-    formatter = RequestFormatter('''
+    formatter = RequestFormatter(
+        """
     Message type:       {levelname}
     Location:           {pathname:s}:{lineno:d}
     Module:             {module:s}
@@ -33,12 +37,16 @@ def setup_error_mail(app):
     Message:
 
     {message:s}
-    ''', style='{')
+    """,
+        style="{",
+    )
 
-    mail_handler = MatcherSMTPHandler(app.config['SMTP_HOST'],
-                                      app.config['MAIL_FROM'],
-                                      app.config['ADMINS'],
-                                      app.name + ' error')
+    mail_handler = MatcherSMTPHandler(
+        app.config["SMTP_HOST"],
+        app.config["MAIL_FROM"],
+        app.config["ADMINS"],
+        app.name + " error",
+    )
     mail_handler.setFormatter(formatter)
 
     mail_handler.setLevel(logging.ERROR)
diff --git a/matcher/nominatim.py b/matcher/nominatim.py
index 137a05d..5e70793 100644
--- a/matcher/nominatim.py
+++ b/matcher/nominatim.py
@@ -101,6 +101,7 @@ def get_hit_name(hit):
         n2 = address_values[1]
         return f"{n1}, {n2}, {country}"
 
+
 def get_hit_label(hit):
     tags = hit["extratags"]
     designation = tags.get("designation")