diff --git a/src/applicationitem.h b/src/applicationitem.h
index 773866d..3cbfd33 100644
--- a/src/applicationitem.h
+++ b/src/applicationitem.h
@@ -1,3 +1,22 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     rekols <revenmartin@gmail.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 3 of the License, or
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef APPLICATIONITEM_H
 #define APPLICATIONITEM_H
 
diff --git a/src/fakewindow.cpp b/src/fakewindow.cpp
index 14c55b6..e502b21 100644
--- a/src/fakewindow.cpp
+++ b/src/fakewindow.cpp
@@ -1,3 +1,22 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     rekols <revenmartin@gmail.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 3 of the License, or
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "fakewindow.h"
 #include "docksettings.h"
 
diff --git a/src/fakewindow.h b/src/fakewindow.h
index 5fea725..74521b9 100644
--- a/src/fakewindow.h
+++ b/src/fakewindow.h
@@ -1,3 +1,22 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     rekols <revenmartin@gmail.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 3 of the License, or
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef FAKEWINDOW_H
 #define FAKEWINDOW_H
 
diff --git a/src/processprovider.cpp b/src/processprovider.cpp
index 90003b2..3a08262 100644
--- a/src/processprovider.cpp
+++ b/src/processprovider.cpp
@@ -1,3 +1,22 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     rekols <revenmartin@gmail.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 3 of the License, or
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "processprovider.h"
 #include <QProcess>
 
diff --git a/src/processprovider.h b/src/processprovider.h
index 8d07bc1..8c4cf4d 100644
--- a/src/processprovider.h
+++ b/src/processprovider.h
@@ -1,3 +1,22 @@
+/*
+ * Copyright (C) 2021 CutefishOS Team.
+ *
+ * Author:     rekols <revenmartin@gmail.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 3 of the License, or
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef PROCESSPROVIDER_H
 #define PROCESSPROVIDER_H