diff --git a/drivers/serial/8250_gsc.c b/drivers/serial/8250_gsc.c
index 418b4fe9a0a..33149d982e8 100644
--- a/drivers/serial/8250_gsc.c
+++ b/drivers/serial/8250_gsc.c
@@ -39,9 +39,9 @@ static int __init serial_init_chip(struct parisc_device *dev)
 		 */
 		if (parisc_parent(dev)->id.hw_type != HPHW_IOA)
 			printk(KERN_INFO
-				"Serial: device 0x%lx not configured.\n"
+				"Serial: device 0x%llx not configured.\n"
 				"Enable support for Wax, Lasi, Asp or Dino.\n",
-				dev->hpa.start);
+				(unsigned long long)dev->hpa.start);
 		return -ENODEV;
 	}