diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index 12ad462737ba..ccf5df44cde4 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -171,6 +171,7 @@ config THERM_PM72
 
 config WINDFARM
 	tristate "New PowerMac thermal control infrastructure"
+	depends on PPC
 
 config WINDFARM_PM81
 	tristate "Support for thermal management on iMac G5"