diff --git a/Source/system/gpio.c b/Source/system/gpio.c
--- a/Source/system/gpio.c
+++ b/Source/system/gpio.c
@@ -59,3 +59,6 @@ void gpio_init(void)
   // Toggle the power LED
   HAL_GPIO_TogglePin(LED_POWER);
 }
+
+// vim:softtabstop=4 shiftwidth=4 expandtab
+