diff --git a/include/arch/msp430fr5969lp/driver/gpio.h b/include/arch/msp430fr5969lp/driver/gpio.h
index e1374625a187162879022b9588266e2fe5d14b53..d279e319f5cb9bfb02552c499645f92b3fec85b7 100644
--- a/include/arch/msp430fr5969lp/driver/gpio.h
+++ b/include/arch/msp430fr5969lp/driver/gpio.h
@@ -26,7 +26,7 @@ class GPIO {
 		 * short-circuit other peripherals.
 		 */
 		inline void setup() {
-			PIDIR = BIT0; // green led
+			P1DIR = BIT0; // green led
 			P2DIR = 0;
 			P3DIR = 0;
 			P4DIR = BIT6; // red LED