diff --git a/tests/src/App/ModuleTest.php b/tests/src/App/ModuleTest.php
index 9b9bdd0cc3..730d1d8863 100644
--- a/tests/src/App/ModuleTest.php
+++ b/tests/src/App/ModuleTest.php
@@ -184,6 +184,8 @@ class ModuleTest extends DatabaseTest
 		$cache->shouldReceive('set')->withAnyArgs()->andReturn(false)->atMost()->twice();
 
 		$lock = Mockery::mock(ILock::class);
+		$lock->shouldReceive('acquire')->andReturn(true);
+		$lock->shouldReceive('isLocked')->andReturn(false);
 
 		$router = (new App\Router([], __DIR__ . '/../../../static/routes.config.php', $l10n, $cache, $lock));
 
diff --git a/tests/src/App/RouterTest.php b/tests/src/App/RouterTest.php
index 987df5ff9c..3a3c0469b4 100644
--- a/tests/src/App/RouterTest.php
+++ b/tests/src/App/RouterTest.php
@@ -57,8 +57,8 @@ class RouterTest extends TestCase
 		$this->cache->shouldReceive('set')->andReturn(false);
 
 		$this->lock = Mockery::mock(ILock::class);
-		$this->cache->shouldReceive('acquire')->andReturn(true);
-		$this->cache->shouldReceive('isLocked')->andReturn(false);
+		$this->lock->shouldReceive('acquire')->andReturn(true);
+		$this->lock->shouldReceive('isLocked')->andReturn(false);
 	}
 
 	public function testGetModuleClass()