diff --git a/packages/hydrojudge/src/judge/run.ts b/packages/hydrojudge/src/judge/run.ts
index b677137fc..6e487f83d 100644
--- a/packages/hydrojudge/src/judge/run.ts
+++ b/packages/hydrojudge/src/judge/run.ts
@@ -18,6 +18,7 @@ export const judge = async (ctx: JudgeTask) => {
             // Allow 2x limits for better debugging
             time: parseTimeMS(ctx.config.time || '1s') * 2,
             memory: parseMemoryMB(ctx.config.memory || '128m'),
+            filename: ctx.config.filename,
             addressSpaceLimit: address_space_limit,
             processLimit: process_limit,
         },
diff --git a/packages/hydrojudge/src/sandbox.ts b/packages/hydrojudge/src/sandbox.ts
index e91d5ccc6..9b00b523f 100644
--- a/packages/hydrojudge/src/sandbox.ts
+++ b/packages/hydrojudge/src/sandbox.ts
@@ -74,7 +74,7 @@ function parseArgs(execute: string): string[] {
 
 function proc(params: Parameter): Cmd {
     const copyOut = supportOptional
-        ? params.copyOut
+        ? (params.copyOut || [])
         : (params.copyOut || []).map((i) => (i.endsWith('?') ? i.substring(0, i.length - 1) : i));
     const stdioLimit = parseMemoryMB(getConfig('stdio_size'));
     const stdioSize = params.cacheStdoutAndStderr ? stdioLimit : 4;
@@ -82,7 +82,7 @@ function proc(params: Parameter): Cmd {
     if (params.cacheStdoutAndStderr) {
         copyOutCached.push('stdout', 'stderr');
         if (params.filename) copyOutCached.push(`${params.filename}.out?`);
-    }
+    } else if (params.filename) copyOut.push(`${params.filename}.out${supportOptional ? '?' : ''}`);
     const copyIn = { ...(params.copyIn || {}) };
     const stdin = params.stdin || { content: '' };
     if (params.filename) copyIn[`${params.filename}.in`] = stdin;