diff --git a/dangerzone/common.py b/dangerzone/common.py
index 6d4d9cd..6cab677 100644
--- a/dangerzone/common.py
+++ b/dangerzone/common.py
@@ -37,4 +37,4 @@ class Common(object):
 
     @output_filename.setter
     def output_filename(self, filename: str) -> None:
-        self._output_filename = filename
\ No newline at end of file
+        self._output_filename = filename