diff --git a/docs_src/path_params_numeric_validations/tutorial006_an_py39.py b/docs_src/path_params_numeric_validations/tutorial006_an_py39.py
index 804751893..426ec3776 100644
--- a/docs_src/path_params_numeric_validations/tutorial006_an_py39.py
+++ b/docs_src/path_params_numeric_validations/tutorial006_an_py39.py
@@ -15,4 +15,6 @@ async def read_items(
     results = {"item_id": item_id}
     if q:
         results.update({"q": q})
+    if size:
+        results.update({"size": size})
     return results