diff --git a/moulinette/core.py b/moulinette/core.py
index 61052dce..f537cabf 100644
--- a/moulinette/core.py
+++ b/moulinette/core.py
@@ -353,7 +353,7 @@ class MoulinetteSignals(object):
         """
         return self._prompt(message, is_password, confirm, color=color)
 
-    def display(self, message, style="info"): # i18n: info
+    def display(self, message, style="info"):  # i18n: info
         """Display a message
 
         Display a message with a given style to the user.
diff --git a/test/test_i18n_keys.py b/test/test_i18n_keys.py
index 39ae749b..815549b8 100644
--- a/test/test_i18n_keys.py
+++ b/test/test_i18n_keys.py
@@ -55,6 +55,7 @@ def keys_defined_for_en():
 expected_string_keys = set(find_expected_string_keys())
 keys_defined = set(keys_defined_for_en())
 
+
 def test_undefined_i18n_keys():
     undefined_keys = expected_string_keys.difference(keys_defined)
     undefined_keys = sorted(undefined_keys)