diff --git a/src/northbridge/intel/gm45/Makefile.inc b/src/northbridge/intel/gm45/Makefile.inc
index 1352525..5fb9a44 100644
--- a/src/northbridge/intel/gm45/Makefile.inc
+++ b/src/northbridge/intel/gm45/Makefile.inc
@@ -17,6 +17,8 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 #
 
+ifeq ($(CONFIG_NORTHBRIDGE_INTEL_GM45),y)
+
 romstage-y += early_init.c
 romstage-y += early_reset.c
 romstage-y += delay.c
@@ -38,3 +40,5 @@
 ramstage-y += gma.c
 
 smm-$(CONFIG_HAVE_SMI_HANDLER) += delay.c
+
+endif