diff --git a/src/northbridge/intel/gm45/Makefile.inc b/src/northbridge/intel/gm45/Makefile.inc
index 4050296..8bb083a 100644
--- a/src/northbridge/intel/gm45/Makefile.inc
+++ b/src/northbridge/intel/gm45/Makefile.inc
@@ -31,7 +31,7 @@
 romstage-y += igd.c
 romstage-y += pm.c
 romstage-y += ram_calc.c
-romstage-$(CONFIG_IOMMU) += iommu.c
+romstage-y += iommu.c
 
 ramstage-y += acpi.c