diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 61653cb..19df881 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -55,7 +55,7 @@
 
 config BOOTX_TEXT
 	bool "Support for early boot text console (BootX or OpenFirmware only)"
-	depends PPC_OF
+	depends PPC_OF && !PPC_ISERIES
 	help
 	  Say Y here to see progress messages from the boot firmware in text
 	  mode. Requires either BootX or Open Firmware.