diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi
index 39e5ea16db885910568219443424100d29802424..f26697330c0cdb3c526d64cd6681a1b4c34ed67f 100644
--- a/arch/arm/boot/dts/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/stm32mp151.dtsi
@@ -1560,7 +1560,7 @@
 			reg = <0x5c004000 0x400>;
 			clocks = <&rcc RTCAPB>, <&rcc RTC>;
 			clock-names = "pclk", "rtc_ck";
-			interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts-extended = <&exti 19 IRQ_TYPE_LEVEL_HIGH>;
 			status = "disabled";
 		};