diff --git a/drivers/mehfet.c b/drivers/mehfet.c
index 20d38cc..58e76c5 100644
--- a/drivers/mehfet.c
+++ b/drivers/mehfet.c
@@ -1,3 +1,20 @@
+/* MSPDebug - debugging tool for MSP430 MCUs
+ * Copyright (C) 2021 sys64738@disroot.org
+ *
+ * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
 
 #include <stddef.h>
 #include <stdbool.h>
diff --git a/drivers/mehfet_proto.c b/drivers/mehfet_proto.c
index 8691819..ff25d80 100644
--- a/drivers/mehfet_proto.c
+++ b/drivers/mehfet_proto.c
@@ -1,3 +1,20 @@
+/* MSPDebug - debugging tool for MSP430 MCUs
+ * Copyright (C) 2021 sys64738@disroot.org
+ *
+ * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
 
 #include <stddef.h>
 #include <stdbool.h>
diff --git a/drivers/mehfet_proto.h b/drivers/mehfet_proto.h
index b886ae6..11ba195 100644
--- a/drivers/mehfet_proto.h
+++ b/drivers/mehfet_proto.h
@@ -1,3 +1,20 @@
+/* MSPDebug - debugging tool for MSP430 MCUs
+ * Copyright (C) 2021 sys64738@disroot.org
+ *
+ * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
 
 #ifndef MEHFET_PROTO_H_
 #define MEHFET_PROTO_H_