diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 603d83a..9d327ec 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -24,6 +24,9 @@
 config ARCH_NO_VIRT_TO_BUS
 	def_bool y
 
+config OF
+	def_bool y
+
 source "init/Kconfig"
 
 menu "General machine setup"