diff --git a/arch/m32r/Kconfig.debug b/arch/m32r/Kconfig.debug
index 36788c2c310d10a4c03cce65d6799f0caa5bef95..31039723804f95fa106c6eadc0a0393db8fba4d8 100644
--- a/arch/m32r/Kconfig.debug
+++ b/arch/m32r/Kconfig.debug
@@ -5,6 +5,9 @@ source "lib/Kconfig.debug"
 config DEBUG_STACKOVERFLOW
 	bool "Check for stack overflows"
 	depends on DEBUG_KERNEL
+	help
+	  This option will cause messages to be printed if free stack space
+	  drops below a certain limit.
 
 config DEBUG_STACK_USAGE
 	bool "Stack utilization instrumentation"