diff --git a/arch/sandbox/Kconfig b/arch/sandbox/Kconfig
index f7a6e1aef809585095af26644b197ee104faaff2..7b07bff1da233b41f9999fdfdc28b2eb699506a2 100644
--- a/arch/sandbox/Kconfig
+++ b/arch/sandbox/Kconfig
@@ -18,4 +18,21 @@ config SYS_CONFIG_NAME
 	default "sandbox_spl" if SANDBOX_SPL
 	default "sandbox" if !SANDBOX_SPL
 
+choice
+	prompt "Run sandbox on 32/64-bit host"
+	default SANDBOX_64BIT
+	help
+	  Sandbox can be built on 32-bit and 64-bit hosts.
+	  The default is to build on a 64-bit host and run
+	  on a 64-bit host. If you want to run sandbox on
+	  a 32-bit host, change it here.
+
+config SANDBOX_32BIT
+	bool "32-bit host"
+
+config SANDBOX_64BIT
+	bool "64-bit host"
+
+endchoice
+
 endmenu