diff --git a/src/mainboard/system76/cml-u/Makefile.inc b/src/mainboard/system76/cml-u/Makefile.inc
index 5276308..51ad543 100644
--- a/src/mainboard/system76/cml-u/Makefile.inc
+++ b/src/mainboard/system76/cml-u/Makefile.inc
@@ -3,6 +3,8 @@
 bootblock-y += bootblock.c
 bootblock-y += gpio_early.c
 
+romstage-y += variants/$(VARIANT_DIR)/romstage.c
+
 ramstage-y += ramstage.c
 ramstage-y += variants/$(VARIANT_DIR)/gpio.c
 ramstage-y += variants/$(VARIANT_DIR)/hda_verb.c