diff --git a/src/Kconfig b/src/Kconfig
index fadcbc4..188d0bd 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -204,6 +204,8 @@
 	bool
 	default n
 
+# Warning: The file is included whether or not the if is here.
+# but the if controls how the evaluation occurs.
 if ARCH_X86
 source src/arch/x86/Kconfig
 endif