diff --git a/tests/roots/test-ext-autodoc/target/__init__.py b/tests/roots/test-ext-autodoc/target/__init__.py
index e28eeef8a64..b6684ee85b1 100644
--- a/tests/roots/test-ext-autodoc/target/__init__.py
+++ b/tests/roots/test-ext-autodoc/target/__init__.py
@@ -145,6 +145,8 @@ def prop2(self):
 
 
 class StrRepr(str):
+    """docstring"""
+
     def __repr__(self):
         return self