diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig
index 15f844f..59d11b3 100644
--- a/arch/arm/mach-imx/imx8/Kconfig
+++ b/arch/arm/mach-imx/imx8/Kconfig
@@ -34,11 +34,11 @@
 
 config BOOTAUX_RESERVED_MEM_BASE
 	hex "i.MX auxiliary core dram memory base"
-	default 0
+	default 0x0
 
 config BOOTAUX_RESERVED_MEM_SIZE
 	hex "i.MX auxiliary core dram memory size"
-	default 0
+	default 0x0
 
 choice
 	prompt "i.MX8 board select"