diff --git a/src/mainboard/google/purin/Makefile.inc b/src/mainboard/google/purin/Makefile.inc
index 00e4f0bdac..00e6af7f4d 100644
--- a/src/mainboard/google/purin/Makefile.inc
+++ b/src/mainboard/google/purin/Makefile.inc
@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += reset.c
 
 ramstage-y += boardid.c