diff --git a/app/tests/Unit/Services/Project/ProjectServiceGuardWiringTest.php b/app/tests/Unit/Services/Project/ProjectServiceGuardWiringTest.php
index fb9360fb..2d7e1028 100644
--- a/app/tests/Unit/Services/Project/ProjectServiceGuardWiringTest.php
+++ b/app/tests/Unit/Services/Project/ProjectServiceGuardWiringTest.php
@@ -49,6 +49,9 @@ class ProjectServiceGuardWiringTest extends TestCase
     public function test_update_invokes_guard_with_change_source_action_when_signal_identifier_changes(): void
     {
         $guard = Mockery::mock(SupplierSnapshotGuard::class);
+        // Эпик 6.2: update() сначала спрашивает isProtected (для уведомления о хвосте),
+        // затем assertCanMutateSource. Допускаем оба вызова.
+        $guard->shouldReceive('isProtected')->andReturn(true);
         $guard->shouldReceive('assertCanMutateSource')
             ->once()
             ->with(Mockery::on(fn ($p) => $p instanceof Project && $p->id === 100), 'change_source')