diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index b5a868d85eb4..1e5478abd90e 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -337,7 +337,7 @@ CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
 #else
 #define IRQ_MIN 9
 #if defined(__PPC)
-#define IRQ_MAX (NR_IRQS-1)
+#define IRQ_MAX (nr_irqs-1)
 #else
 #define IRQ_MAX 12
 #endif