diff --git a/core/Migrations/Version14000Date20180522074438.php b/core/Migrations/Version14000Date20180522074438.php
index bbb805a9cda51cb9911f2e90a81d616a462a8f7d..28207d0b900c84731c20f1da4511981943a49ca3 100644
--- a/core/Migrations/Version14000Date20180522074438.php
+++ b/core/Migrations/Version14000Date20180522074438.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 
 /**
  * @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
diff --git a/lib/private/Authentication/TwoFactorAuth/ProviderLoader.php b/lib/private/Authentication/TwoFactorAuth/ProviderLoader.php
index bd20cd129491007f05dcaf0fcad538f2188ef62e..f735bad1695a82fab40c4dcaed599151fc336091 100644
--- a/lib/private/Authentication/TwoFactorAuth/ProviderLoader.php
+++ b/lib/private/Authentication/TwoFactorAuth/ProviderLoader.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 
 /**
  * @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
diff --git a/lib/private/Authentication/TwoFactorAuth/ProviderSet.php b/lib/private/Authentication/TwoFactorAuth/ProviderSet.php
index 60e967ba546a057c8b408ff18bba829bc27a6197..bbb9467798b1fe6de4e88a2b5dc151799c15811a 100644
--- a/lib/private/Authentication/TwoFactorAuth/ProviderSet.php
+++ b/lib/private/Authentication/TwoFactorAuth/ProviderSet.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 
 /**
  * @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
diff --git a/tests/lib/Authentication/TwoFactorAuth/Db/ProviderUserAssignmentDaoTest.php b/tests/lib/Authentication/TwoFactorAuth/Db/ProviderUserAssignmentDaoTest.php
index adce55e11e38240cbd82292dc166a2f984f4f055..d1fed0c3a6005733d7516b188282a3583fe60640 100644
--- a/tests/lib/Authentication/TwoFactorAuth/Db/ProviderUserAssignmentDaoTest.php
+++ b/tests/lib/Authentication/TwoFactorAuth/Db/ProviderUserAssignmentDaoTest.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 
 /**
  * @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
diff --git a/tests/lib/Authentication/TwoFactorAuth/ProviderLoaderTest.php b/tests/lib/Authentication/TwoFactorAuth/ProviderLoaderTest.php
index 6479e41fffb12cf97bd7a575857cbe5053483bb5..55a1e17392898c0ca85a8bae4aa4fec6bb507c9f 100644
--- a/tests/lib/Authentication/TwoFactorAuth/ProviderLoaderTest.php
+++ b/tests/lib/Authentication/TwoFactorAuth/ProviderLoaderTest.php
@@ -1,10 +1,26 @@
 <?php
+declare(strict_types=1);
 
 /**
- * Created by PhpStorm.
- * User: christoph
- * Date: 04.06.18
- * Time: 13:29
+ * @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
+ *
+ * @author 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
  */
 
 namespace lib\Authentication\TwoFactorAuth;
diff --git a/tests/lib/Authentication/TwoFactorAuth/ProviderSetTest.php b/tests/lib/Authentication/TwoFactorAuth/ProviderSetTest.php
index 46191780f816615cb15d685053c2ee866b4c45b1..a6f0a703d5e5840797cfa9df5414d2f73479b395 100644
--- a/tests/lib/Authentication/TwoFactorAuth/ProviderSetTest.php
+++ b/tests/lib/Authentication/TwoFactorAuth/ProviderSetTest.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 
 /**
  * @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>