diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index c85b87c..3e677c4 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -440,7 +440,7 @@
 
 
 #if defined(CONFIG_PPC_CHRP) && defined(CONFIG_PPC32)
-	if(_machine == _MACH_chrp && _chrp_type == _CHRP_Pegasos) {
+	if(machine_is(chrp) && _chrp_type == _CHRP_Pegasos) {
 		hwif->irq = hwif->channel ? 15 : 14;
 	}
 #endif