diff --git a/src/mainboard/lenovo/l520/Makefile.inc b/src/mainboard/lenovo/l520/Makefile.inc
index 2ce116f..14cd059 100644
--- a/src/mainboard/lenovo/l520/Makefile.inc
+++ b/src/mainboard/lenovo/l520/Makefile.inc
@@ -14,6 +14,7 @@
 ##
 
 romstage-y += romstage.c
+bootblock-y += gpio.c
 romstage-y += gpio.c
 smm-y += smihandler.c