diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index 42e8550..b2d65b2 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -2383,7 +2383,7 @@
 			break;
 
 #ifdef SERIAL_DEBUG_PCI
-		printk(KERN_DEBUG "Setup PCI port: port %x, irq %d, type %d\n",
+		printk(KERN_DEBUG "Setup PCI port: port %lx, irq %d, type %d\n",
 		       serial_port.iobase, serial_port.irq, serial_port.iotype);
 #endif