diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index cbae4f2a34d..411bb8a5432 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -28,7 +28,7 @@ source "kernel/Kconfig"
 menu "X86 Platform Configuration options"
 
 config RAM_SIZE
-	int "Amount of RAM given to the kernel (in kB)"
+	hex "Amount of RAM given to the kernel (in kB)"
 	help
 	This option specifies the amount of RAM given to the kernel. It must
 	not exceed the amount available on the target.  When running an XIP
@@ -39,7 +39,7 @@ config RAM_SIZE
 	The default value is specified by the platform.
 
 config ROM_SIZE
-	int "Amount of ROM given to the kernel (in kB)" if XIP
+	hex "Amount of ROM given to the kernel (in kB)" if XIP
 	help
 	This option specifies the amount of ROM given to the kernel. It must
 	not exceed the amount available on the target.  It must also be large
diff --git a/arch/x86/platforms/galileo/Kconfig b/arch/x86/platforms/galileo/Kconfig
index db1a34377d6..5de64ad56a1 100644
--- a/arch/x86/platforms/galileo/Kconfig
+++ b/arch/x86/platforms/galileo/Kconfig
@@ -28,10 +28,10 @@ config PHYS_LOAD_ADDR
 	default 0x00100000
 
 config RAM_SIZE
-	default 32768
+	default 0x8000
 
 config ROM_SIZE
-	default 1024 if XIP
+	default 0x400 if XIP
 
 config SYS_CLOCK_HW_CYCLES_PER_SEC
 	default 25000000  if HPET_TIMER