diff --git a/src/drivers/batt_smbus/batt_smbus.h b/src/drivers/batt_smbus/batt_smbus.h
index ab9ddd7a97..da072a0ec7 100644
--- a/src/drivers/batt_smbus/batt_smbus.h
+++ b/src/drivers/batt_smbus/batt_smbus.h
@@ -43,6 +43,8 @@
  * @author Jacob Dahl <dahl.jakejacob@gmail.com>
  */
 
+#pragma once
+
 #include <px4_config.h>
 #include <px4_workqueue.h>