diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c
index 5d9301de..5695a79 100644
--- a/drivers/pnp/interface.c
+++ b/drivers/pnp/interface.c
@@ -424,7 +424,7 @@
 				start = simple_strtoul(buf, &buf, 0);
 				pnp_res = pnp_add_irq_resource(dev, start, 0);
 				if (pnp_res)
-					nirq++;
+					pnp_res->index = nirq++;
 				continue;
 			}
 			if (!strnicmp(buf, "dma", 3)) {