diff --git a/packages/import-qduoj/index.ts b/packages/import-qduoj/index.ts
index 047deecb7..c4179aef8 100644
--- a/packages/import-qduoj/index.ts
+++ b/packages/import-qduoj/index.ts
@@ -28,10 +28,13 @@ const ProblemSchema = Schema.object({
     display_id: Schema.string(),
     time_limit: Schema.union([Schema.number(), Schema.string()]).required(),
     memory_limit: Schema.union([Schema.number(), Schema.string()]).required(),
-    spj: Schema.object({
-        language: Schema.string().required(),
-        code: Schema.string().required(),
-    }),
+    spj: Schema.union([
+        Schema.never(),
+        Schema.object({
+            language: Schema.string().required(),
+            code: Schema.string().required(),
+        }),
+    ]),
     test_case_score: Schema.array(Schema.object({
         input_name: Schema.string().required(),
         output_name: Schema.string().required(),