diff --git a/src/tuxedo_io/tuxedo_io_ioctl.h b/src/tuxedo_io/tuxedo_io_ioctl.h
index f271707..f63fb7f 100644
--- a/src/tuxedo_io/tuxedo_io_ioctl.h
+++ b/src/tuxedo_io/tuxedo_io_ioctl.h
@@ -85,6 +85,6 @@
 #define W_UW_FANSPEED2		_IOW(MAGIC_WRITE_UW, 0x11, int32_t*)
 #define W_UW_MODE		_IOW(MAGIC_WRITE_UW, 0x12, int32_t*)
 #define W_UW_MODE_ENABLE	_IOW(MAGIC_WRITE_UW, 0x13, int32_t*)
-#define W_UW_FANAUTO	_IO(MAGIC_WRITE_UW, 0x14) // undo all previous calls of W_UW_FANSPEED and W_UW_FANSPEED2
+#define W_UW_FANAUTO		_IO(MAGIC_WRITE_UW, 0x14) // undo all previous calls of W_UW_FANSPEED and W_UW_FANSPEED2
 
 #endif