diff --git a/Libraries/Si446x/si446x.c b/Libraries/Si446x/si446x.c
--- a/Libraries/Si446x/si446x.c
+++ b/Libraries/Si446x/si446x.c
@@ -1,6 +1,24 @@
-//
-// Si446x: Initializes and configures a Si446x transceiver over SPI
-//
+/*
+ * FeatherHAB
+ *
+ * This file is part of FeatherHAB.
+ *
+ * FeatherHab 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.
+ *
+ * FeatherHab 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 FeatherHAB. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Ethan Zonca
+ *
+ */
 
 #include "stm32f0xx_hal.h"