diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index bfce60183a6e..836ddc476764 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -4031,7 +4031,7 @@ pmcraid_register_interrupt_handler(struct pmcraid_instance *pinstance)
 	return 0;
 
 out_unwind:
-	while (--i > 0)
+	while (--i >= 0)
 		free_irq(pci_irq_vector(pdev, i), &pinstance->hrrq_vector[i]);
 	pci_free_irq_vectors(pdev);
 	return rc;