diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c
index 3da4d2996265..846b02b4189b 100644
--- a/sys/dev/pci/pci.c
+++ b/sys/dev/pci/pci.c
@@ -1207,7 +1207,7 @@ pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
 		 * If device doesn't have an interrupt routed, and is deserving of 
 		 * an interrupt, try to assign it one.
 		 */
-		if ((type == SYS_RES_IRQ) && (cfg->intline == 255) && (cfg->intpin != 0)) {
+		if ((type == SYS_RES_IRQ) && (cfg->intline == 255 || cfg->intline == 0) && (cfg->intpin != 0)) {
 			cfg->intline = PCIB_ROUTE_INTERRUPT(device_get_parent(dev), child,
 							    cfg->intpin);
 			if (cfg->intline != 255) {