:bug: Fix setting 4XX overriding default 422 validation errors(#517)

diff --git a/fastapi/openapi/utils.py b/fastapi/openapi/utils.py
index d9ec7bd6e3c57bd0244d818cf061d22bc6247039..ee35d61fcf476a6634ad338b29c4b5cba0ef9854 100644 (file)
--- a/fastapi/openapi/utils.py
+++ b/fastapi/openapi/utils.py
@@ -225,7 +225,7 @@ def get_openapi_path(
             if (all_route_params or route.body_field) and not any(
                 [
                     status in operation["responses"]
-                    for status in [http422, "4xx", "default"]
+                    for status in [http422, "4XX", "default"]
                 ]
             ):
                 operation["responses"][http422] = {