diff --git a/Tests/Asset/AbstractAssetManagerTest.php b/Tests/Asset/AbstractAssetManagerTest.php
index b0532fe..a5648f5 100644
--- a/Tests/Asset/AbstractAssetManagerTest.php
+++ b/Tests/Asset/AbstractAssetManagerTest.php
@@ -233,6 +233,9 @@ public function testAddDependenciesForInstallCommand()
         );
         /* @var RootPackageInterface|\PHPUnit_Framework_MockObject_MockObject $rootPackage */
         $rootPackage = $this->getMockBuilder('Composer\Package\RootPackageInterface')->getMock();
+        $rootPackage->expects($this->any())
+            ->method('getLicense')
+            ->willReturn(array());
 
         $this->assertFalse($this->manager->isInstalled());
         $this->assertFalse($this->manager->isUpdatable());
@@ -264,6 +267,9 @@ public function testAddDependenciesForUpdateCommand()
         $jsonFile = new JsonFile($this->cwd.'/package.json');
         /* @var RootPackageInterface|\PHPUnit_Framework_MockObject_MockObject $rootPackage */
         $rootPackage = $this->getMockBuilder('Composer\Package\RootPackageInterface')->getMock();
+        $rootPackage->expects($this->any())
+            ->method('getLicense')
+            ->willReturn(array());
         $nodeModulePath = $this->cwd.ltrim(AbstractAssetManager::NODE_MODULES_PATH, '.');
 
         $jsonFile->write($package);
diff --git a/Tests/Asset/AssetPackageTest.php b/Tests/Asset/AssetPackageTest.php
index 47469f1..ed5c4da 100644
--- a/Tests/Asset/AssetPackageTest.php
+++ b/Tests/Asset/AssetPackageTest.php
@@ -54,6 +54,10 @@ protected function setUp()
             ->setMethods(array('exists', 'getPath', 'read', 'write'))
             ->getMock();
 
+        $this->rootPackage->expects($this->any())
+            ->method('getLicense')
+            ->willReturn(array());
+
         $this->sfs->mkdir($this->cwd);
     }
 
@@ -148,6 +152,7 @@ public function testInjectionOfRequiredKeys(array $expected, array $package, $li
     {
         $this->addPackageFile($package);
 
+        $this->rootPackage = $this->getMockBuilder('Composer\Package\RootPackageInterface')->getMock();
         $this->rootPackage->expects($this->any())
             ->method('getLicense')
             ->willReturn(array($license));