diff --git a/arch/arm/boot/dts/at91sam9263ek.dts b/arch/arm/boot/dts/at91sam9263ek.dts
index f86ac4b609fc..7cfe9d521f12 100644
--- a/arch/arm/boot/dts/at91sam9263ek.dts
+++ b/arch/arm/boot/dts/at91sam9263ek.dts
@@ -38,6 +38,7 @@
 			};
 
 			usart0: serial@fff8c000 {
+				pinctrl-0 = <&pinctrl_uart0 &pinctrl_uart0_rts_cts>;
 				status = "okay";
 			};