diff --git a/packages/opencode/test/config/config.test.ts b/packages/opencode/test/config/config.test.ts
index 4eb46ae1e90..8d5baede50f 100644
--- a/packages/opencode/test/config/config.test.ts
+++ b/packages/opencode/test/config/config.test.ts
@@ -573,7 +573,7 @@ it.effect("rejects native project permissions even with inherited V1 rules", ()
       if (Exit.isFailure(exit))
         expect(Cause.squash(exit.cause)).toMatchObject({
           data: {
-            path: expect.stringContaining("project/opencode.json"),
+            path: expect.stringContaining(path.join("project", "opencode.json")),
             issues: [
               { path: ["permissions"], message: expect.stringContaining('Use V1 "permission" rules or run opencode2') },
               { path: ["agents", "reviewer", "permissions"], message: expect.stringContaining("not supported") },