diff --git a/docs_src/body/tutorial005_py310.py b/docs_src/body/tutorial005_py310.py
index 073cde6be..cd487a75a 100644
--- a/docs_src/body/tutorial005_py310.py
+++ b/docs_src/body/tutorial005_py310.py
@@ -5,7 +5,7 @@ app = FastAPI()
 
 
 class Item(BaseModel):
-    description: str | None = None
+    description: str
 
 
 @app.post("/items/")