diff --git a/tests/Feature/AdminPlatformOrderIndexExportLedgerLinkShouldRenderWhenReceiptsPresentTest.php b/tests/Feature/AdminPlatformOrderIndexExportLedgerLinkShouldRenderWhenReceiptsPresentTest.php
index ff65331..5b580fe 100644
--- a/tests/Feature/AdminPlatformOrderIndexExportLedgerLinkShouldRenderWhenReceiptsPresentTest.php
+++ b/tests/Feature/AdminPlatformOrderIndexExportLedgerLinkShouldRenderWhenReceiptsPresentTest.php
@@ -87,6 +87,9 @@ class AdminPlatformOrderIndexExportLedgerLinkShouldRenderWhenReceiptsPresentTest
         $res->assertSee('导出对账明细', false);
         $res->assertSee('target="_blank"', false);
 
+        // 口径稳定：download=1 必须排在 query 第一位（安全阀 + 测试/前端稳定）
+        $res->assertDontSee('/admin/platform-orders/' . $withEvidence->id . '/export-ledger?include_order_snapshot=1&download=1', false);
+
         $url2 = '/admin/platform-orders/' . $withoutEvidence->id . '/export-ledger?download=1&include_order_snapshot=1';
         $res->assertDontSee($url2, false);
     }