diff --git a/main.c b/main.c
index 86cbb73..1a85ee7 100755
--- a/main.c
+++ b/main.c
@@ -12,8 +12,22 @@
  * Raise and lowering times are defined in the rolltimelist macro. The N_of_Shutters macro contains the f
  * well as the desired lowering percentages are read from a local file (schedule.txt), and
  * are executed; the schedule contains one full week.
- * .
- * The program is compiled to openwrt 19.07.8; HW: D-Link DIR-600 rev.B6E
+ * ---------------------------------------------------------------------------------------------------------------------
+ *
+ * This file is part of Shutter.
+ *
+ * Shutter 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
+ * (at your option) any later version.
+ *
+ * Shutter 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 Shutter.  If not, see <https://www.gnu.org/licenses/>.
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 int main ()
 {
diff --git a/moving.c b/moving.c
index 3183a41..72913c0 100644
--- a/moving.c
+++ b/moving.c
@@ -1,6 +1,19 @@
-//
-// Created by lacko on 08/08/2021.
-//
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * This file is part of Shutter.
+ *
+ * Shutter 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
+ * (at your option) any later version.
+ *
+ * Shutter 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 Shutter.  If not, see <https://www.gnu.org/licenses/>.
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include "moving.h"
 #include <stdio.h>
diff --git a/moving.h b/moving.h
index fdfa317..012883a 100644
--- a/moving.h
+++ b/moving.h
@@ -1,7 +1,20 @@
-//
-// Created by lacko on 08/08/2021.
-// Redőnyök mozgatásáért felelős függvényeket tartalmaz
-//
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * This file is part of Shutter.
+ *
+ * Shutter 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
+ * (at your option) any later version.
+ *
+ * Shutter 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 Shutter.  If not, see <https://www.gnu.org/licenses/>.
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 #include "shutter.h"
 #ifndef _MOZGATAS_H_
 #define _MOZGATAS_H_
diff --git a/shutter.h b/shutter.h
index d2e2641..ac4a03a 100644
--- a/shutter.h
+++ b/shutter.h
@@ -1,6 +1,19 @@
-//
-// Created by lacko on 08/08/2021.
-//
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * This file is part of Shutter.
+ *
+ * Shutter 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
+ * (at your option) any later version.
+ *
+ * Shutter 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 Shutter.  If not, see <https://www.gnu.org/licenses/>.
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #ifndef _SHUTTER_H_
 #define _SHUTTER_H_
diff --git a/timing.c b/timing.c
index 1872171..d021118 100644
--- a/timing.c
+++ b/timing.c
@@ -1,6 +1,19 @@
-//
-// Created by lacko on 08/08/2021.
-//
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * This file is part of Shutter.
+ *
+ * Shutter 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
+ * (at your option) any later version.
+ *
+ * Shutter 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 Shutter.  If not, see <https://www.gnu.org/licenses/>.
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include "timing.h"
 #include <string.h>
diff --git a/timing.h b/timing.h
index 1bdf620..b5c3a5d 100644
--- a/timing.h
+++ b/timing.h
@@ -1,6 +1,20 @@
-//
-// Created by lacko on 08/08/2021.
-//
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * This file is part of Shutter.
+ *
+ * Shutter 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
+ * (at your option) any later version.
+ *
+ * Shutter 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 Shutter.  If not, see <https://www.gnu.org/licenses/>.
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 #ifndef _TIMING_H_
 #define _TIMING_H_