diff --git a/dts/arm/olimexino_stm32.dts b/dts/arm/olimexino_stm32.dts
index 52d0a9dbd21..901bb39f2ec 100644
--- a/dts/arm/olimexino_stm32.dts
+++ b/dts/arm/olimexino_stm32.dts
@@ -31,7 +31,7 @@
 	pinctrl-names = "default";
 };
 
-&usart2 {
+&usart3 {
 	current-speed = <115200>;
 	pinctrl-0 = <&usart3_pins_a>;
 	pinctrl-names = "default";