diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index f6db3b3..f2900f8 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -911,6 +911,7 @@
 	default y if PPC_PREP
 
 config SMP
+	depends on PPC_STD_MMU
 	bool "Symmetric multi-processing support"
 	---help---
 	  This enables support for systems with more than one CPU. If you have