diff --git a/packages/hydrooj/src/handler/problem.ts b/packages/hydrooj/src/handler/problem.ts
index d35e61ca0..df93fcd9e 100644
--- a/packages/hydrooj/src/handler/problem.ts
+++ b/packages/hydrooj/src/handler/problem.ts
@@ -54,7 +54,6 @@ registerValue('Problem', [
     ['pid', 'String'],
     ['title', 'String!'],
     ['content', 'String!'],
-    ['config', 'String!'],
     ['data', '[FileInfo]'],
     ['additional_file', '[FileInfo]'],
     ['nSubmit', 'Int'],