diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 33b467a..1ef6df3 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -129,7 +129,7 @@
 
 config USB_ISP1760_OF
 	bool "Support for the OF platform bus"
-	depends on USB_ISP1760_HCD && OF
+	depends on USB_ISP1760_HCD && PPC_OF
 	---help---
 	  Enables support for the device present on the PowerPC
 	  OpenFirmware platform bus.