diff --git a/lorawan.h b/lorawan.h
index 74e7917737be0a602987528679536f536143a514..27bb21f0ca5e137f550a413ec641d1fb94b53885 100644
--- a/lorawan.h
+++ b/lorawan.h
@@ -8,7 +8,6 @@
 #include <hal/hal.h>
 #include <arduino_lmic_hal_boards.h>
 #include <SPI.h>
-typedef uint8_t u1_t;
 
 #include "co2_sensor.h"
 #include "led_effects.h"