diff --git a/gendiff/gendiff.py b/gendiff/gendiff.py
index a8f180a..08d6ee5 100644
--- a/gendiff/gendiff.py
+++ b/gendiff/gendiff.py
@@ -21,4 +21,4 @@ def generate_diff(filepath1, filepath2, output_format='stylish'):
             + 'Available formats are: "stylish", "plain", "json".'
         )
 
-    return apply_format(get_diff(config1, config2)).replace("'","")
+    return apply_format(get_diff(config1, config2)).replace("'", "")