diff --git a/packages/vscode-pyright/schemas/pyrightconfig.schema.json b/packages/vscode-pyright/schemas/pyrightconfig.schema.json
index 35bddf456..42c5de59e 100644
--- a/packages/vscode-pyright/schemas/pyrightconfig.schema.json
+++ b/packages/vscode-pyright/schemas/pyrightconfig.schema.json
@@ -201,7 +201,7 @@
       "$id": "#/properties/reportInvalidTypeForm",
       "$ref": "#/definitions/diagnostic",
       "title": "Controls reporting of type expressions that use an invalid form",
-      "default": "warning"
+      "default": "error"
     },
     "reportMissingTypeStubs": {
       "$id": "#/properties/reportMissingTypeStubs",