diff --git a/acceptance/bin/sort_lines.py b/acceptance/bin/sort_lines.py
index e7b8256e4..9ac87feee 100755
--- a/acceptance/bin/sort_lines.py
+++ b/acceptance/bin/sort_lines.py
@@ -2,7 +2,9 @@
 """
 Helper to sort lines in text file. Similar to 'sort' but no dependence on locale or presence of 'sort' in PATH.
 """
+
 import sys
+
 lines = sys.stdin.readlines()
 lines.sort()
 sys.stdout.write("".join(lines))