diff --git a/Tools/clinic/clinic.py b/Tools/clinic/clinic.py
index 5f158c4e550891..19335f78873647 100755
--- a/Tools/clinic/clinic.py
+++ b/Tools/clinic/clinic.py
@@ -1929,8 +1929,7 @@ def render_function(
         template_dict['docstring'] = self.docstring_for_c_string(f)
 
         template_dict['self_name'] = template_dict['self_type'] = template_dict['self_type_check'] = ''
-        if f.target_critical_section is not None:
-            template_dict['target_critical_section'] = ','.join(f.target_critical_section)
+        template_dict['target_critical_section'] = ','.join(f.target_critical_section)
         for converter in converters:
             converter.set_template_dict(template_dict)