diff --git a/tests/unit_tests/test_helpers.py b/tests/unit_tests/test_helpers.py
index 67fabd7af8..79d39901f0 100644
--- a/tests/unit_tests/test_helpers.py
+++ b/tests/unit_tests/test_helpers.py
@@ -258,9 +258,9 @@ def test_snake_case(text, expected):
     "text, expected",
     (
         ("foo_bar", "foo_bar"),
-        ('!"§$%&/()=?foo_bar', "foo_bar"),
-        ('foo_!"§$%&/()=?bar', "foo_bar"),
-        ('foo_bar!"§$%&/()=?', "foo_bar"),
+        ('!"§$%&/()=?foo_bar', "___________foo_bar"),
+        ('foo_!"§$%&/()=?bar', "foo____________bar"),
+        ('foo_bar!"§$%&/()=?', "foo_bar___________"),
     ),
 )
 def test_sanitize(text, expected):