diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index 0d2ef1e9a6fdd45cf483f61b33ccc96d2e71ce04..0f4549860226636a888e0321f4df402a135a1b19 100644
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -81,7 +81,7 @@ config DEBUG_STACK_USAGE
 
 config 4KSTACKS
 	bool "Use 4Kb for kernel stacks instead of 8Kb"
-	depends on DEBUG_KERNEL
+	depends on DEBUG_KERNEL && (MMU || BROKEN)
 	help
 	  If you say Y here the kernel will use a 4Kb stacksize for the
 	  kernel stack attached to each process/thread. This facilitates