diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 1fed543..b6d318e 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -345,3 +345,5 @@
 endif
 
 ramstage-y += uuid.c
+
+romstage-$(CONFIG_ROMSTAGE_SPD_SMBUS) += spd_cache.c