diff --git a/Classes/Domain/Search/CachedSearchService.php b/Classes/Domain/Search/CachedSearchService.php
index b0a6dff..0976521 100644
--- a/Classes/Domain/Search/CachedSearchService.php
+++ b/Classes/Domain/Search/CachedSearchService.php
@@ -2,6 +2,25 @@
 
 namespace Codappix\SearchCore\Domain\Search;
 
+/*
+ * Copyright (C) 2018 Benjamin Serfhos <benjamin@serfhos.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
 use Codappix\SearchCore\Connection\SearchRequestInterface;
 use Codappix\SearchCore\Connection\SearchResultInterface;
 use TYPO3\CMS\Core\SingletonInterface;
diff --git a/Classes/Domain/Search/MissingAttributeException.php b/Classes/Domain/Search/MissingAttributeException.php
index 0e075ed..f47e369 100644
--- a/Classes/Domain/Search/MissingAttributeException.php
+++ b/Classes/Domain/Search/MissingAttributeException.php
@@ -2,6 +2,25 @@
 
 namespace Codappix\SearchCore\Domain\Search;
 
+/*
+ * Copyright (C) 2018 Benjamin Serfhos <benjamin@serfhos.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
 class MissingAttributeException extends \InvalidArgumentException
 {
 }
diff --git a/Classes/Hook/Filter/FrontendUserAccessFilter.php b/Classes/Hook/Filter/FrontendUserAccessFilter.php
index e043b0a..fc19fec 100644
--- a/Classes/Hook/Filter/FrontendUserAccessFilter.php
+++ b/Classes/Hook/Filter/FrontendUserAccessFilter.php
@@ -2,6 +2,25 @@
 
 namespace Codappix\SearchCore\Hook\Filter;
 
+/*
+ * Copyright (C) 2018 Benjamin Serfhos <benjamin@serfhos.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
 use TYPO3\CMS\Frontend\Authentication\FrontendUserAuthentication;
 
 /**