diff --git a/tests/Integration/DnsMasqTest.php b/tests/Integration/DnsMasqTest.php
index a1663da6c..8a2337d08 100644
--- a/tests/Integration/DnsMasqTest.php
+++ b/tests/Integration/DnsMasqTest.php
@@ -47,10 +47,11 @@ public function test_dnsmasqSetup_correctly_installs_and_configures_dnsmasq_cont
         $pm = Mockery::mock(PackageManager::class);
         $pm->shouldReceive('ensureInstalled')->once()->with('dnsmasq');
         $sm = Mockery::mock(ServiceManager::class);
-        $files = Mockery::mock(Filesystem::class);
+        $files = resolve(StubForFiles::class);
 
         swap(PackageManager::class, $pm);
         swap(ServiceManager::class, $sm);
+        swap(Filesystem::class, $files);
 
         $dnsMasq = resolve(DnsMasq::class);
         $dnsMasq->nmConfigPath = __DIR__ . '/output/valet.conf';
@@ -92,3 +93,11 @@ public function test_update_domain_removes_old_resolver_and_reinstalls()
         $dnsMasq->updateDomain('old', 'new');
     }
 }
+
+class StubForFiles extends Filesystem
+{
+    function ensureDirExists($path, $owner = null, $mode = 0755)
+    {
+        return;
+    }
+}
\ No newline at end of file