diff --git a/tests/test_injection_security.py b/tests/test_injection_security.py
index 930d667..e41ba64 100644
--- a/tests/test_injection_security.py
+++ b/tests/test_injection_security.py
@@ -501,7 +501,6 @@ def test_canonical_ini_and_postfix_escape_source_keys():
     from jinjaturtle.core import generate_jinja2_template
 
     parser = ConfigParser()
-    parser.optionxform = str
     parser.add_section('s_{{ boom.run("ini") }}')
     parser.set('s_{{ boom.run("ini") }}', "key", "ok")
     ini_template = generate_jinja2_template("ini", parser, "role", original_text=None)