diff --git a/drivers/net/ioc3-eth.c b/drivers/net/ioc3-eth.c
index ae71ed5..e76e6e7 100644
--- a/drivers/net/ioc3-eth.c
+++ b/drivers/net/ioc3-eth.c
@@ -145,7 +145,7 @@
 static inline unsigned long ioc3_map(void *ptr, unsigned long vdev)
 {
 #ifdef CONFIG_SGI_IP27
-	vdev <<= 58;   /* Shift to PCI64_ATTR_VIRTUAL */
+	vdev <<= 57;   /* Shift to PCI64_ATTR_VIRTUAL */
 
 	return vdev | (0xaUL << PCI64_ATTR_TARG_SHFT) | PCI64_ATTR_PREF |
 	       ((unsigned long)ptr & TO_PHYS_MASK);