diff --git a/tests/micropython/extreme_exc.py b/tests/micropython/extreme_exc.py
index dae5b15186..9d2f24745f 100644
--- a/tests/micropython/extreme_exc.py
+++ b/tests/micropython/extreme_exc.py
@@ -126,7 +126,7 @@ def main():
         )
     except Exception as er:
         e = er
-    lst[0] = None
+    lst[0][0] = None
     lst = None
     print(repr(e)[:10])