diff --git a/src/default_lowlevel.c b/src/default_lowlevel.c
index 452771085..35750314a 100644
--- a/src/default_lowlevel.c
+++ b/src/default_lowlevel.c
@@ -65,7 +65,10 @@ void uart1_init(uint16_t inc, uint16_t mod, uint8_t samp) {
 	*UART1_UCON = (1 << 0) | (1 << 1); /* enable receive, transmit */
 	if(samp == UCON_SAMP_16X) 
 		set_bit(*UART1_UCON,UCON_SAMP);
-	*GPIO_FUNC_SEL0 = ( (0x01 << (14*2)) | (0x01 << (15*2)) ); /* set GPIO15-14 to UART (UART1 TX and RX)*/
+
+        /* set GPIO15-14 to UART (UART1 TX and RX)*/
+	GPIO->FUNC_SEL.GPIO_14 = 1;
+	GPIO->FUNC_SEL.GPIO_15 = 1;
        
 	/* interrupt when there are this number or more bytes free in the TX buffer*/
 	*UART1_UTXCON = 16;