diff --git a/src/mainboard/lenovo/x60/i915.c b/src/mainboard/lenovo/x60/i915.c
index b41a0baaa1..8fbd2a14fc 100644
--- a/src/mainboard/lenovo/x60/i915.c
+++ b/src/mainboard/lenovo/x60/i915.c
@@ -138,7 +138,7 @@ int gtt_setup(unsigned int mmiobase)
 	PGETBL_save = read32(mmiobase + PGETBL_CTL) & ~PGETBL_ENABLED;
 	PGETBL_save |= PGETBL_ENABLED;
 
-	PGETBL_save |= pci_read_config32(dev_find_slot(0, PCI_DEVFN(2,0)), 0x5c) & 0xfffff000;
+	PGETBL_save |= pci_read_config32(dev_find_slot(0, PCI_DEVFN(2,0)), BSM) & 0xfffff000;
 	PGETBL_save |= 2; /* set GTT to 256kb */
 
 	write32(mmiobase + GFX_FLSH_CNTL, 0);