diff --git a/arch/arm/dts/stm32f429.dtsi b/arch/arm/dts/stm32f429.dtsi
index 22225104fca8..8133ea15b036 100644
--- a/arch/arm/dts/stm32f429.dtsi
+++ b/arch/arm/dts/stm32f429.dtsi
@@ -346,6 +346,7 @@
 			interrupt-names = "tx", "rx0", "rx1", "sce";
 			resets = <&rcc STM32F4_APB1_RESET(CAN2)>;
 			clocks = <&rcc 0 STM32F4_APB1_CLOCK(CAN2)>;
+			st,can-secondary;
 			st,gcan = <&gcan>;
 			status = "disabled";
 		};