diff --git a/py/LunaTranslator/cishu/cishubase.py b/py/LunaTranslator/cishu/cishubase.py
index 70ad9380df9..ec581918521 100644
--- a/py/LunaTranslator/cishu/cishubase.py
+++ b/py/LunaTranslator/cishu/cishubase.py
@@ -107,7 +107,7 @@ def markdown_to_html(self, markdown_text: str):
         lideep = 0
 
         def switchli():
-            nonlocal lideep
+            nonlocal lideep, lastli
             while lideep:
                 html_lines.append("</ul>")
                 lideep -= 1