diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c
index b8ce5d6..0e8fd09 100644
--- a/src/cpu/intel/haswell/romstage.c
+++ b/src/cpu/intel/haswell/romstage.c
@@ -119,9 +119,9 @@
 	slot = stack_push(slot, ~(CACHE_ROM_SIZE - 1) | MTRR_TYPE_WRPROT);
 	num_mtrrs++;
 
-	/* Cache RAM as WB from 0 -> CONFIG_RAMTOP. */
+	/* Cache RAM as WB from 0 -> CACHE_TMP_RAMTOP. */
 	slot = stack_push(slot, mtrr_mask_upper); /* upper mask */
-	slot = stack_push(slot, ~(CONFIG_RAMTOP - 1) | MTRR_PHYS_MASK_VALID);
+	slot = stack_push(slot, ~(CACHE_TMP_RAMTOP - 1) | MTRR_PHYS_MASK_VALID);
 	slot = stack_push(slot, 0); /* upper base */
 	slot = stack_push(slot, 0 | MTRR_TYPE_WRBACK);
 	num_mtrrs++;