diff --git a/arch/ppc64/Kconfig.debug b/arch/ppc64/Kconfig.debug
index e341a129da80..46b1ce58da3b 100644
--- a/arch/ppc64/Kconfig.debug
+++ b/arch/ppc64/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 KPROBES
 	bool "Kprobes"