diff --git a/board/renesas/koelsch/Makefile b/board/renesas/koelsch/Makefile
index b4d0183..c10bba5 100644
--- a/board/renesas/koelsch/Makefile
+++ b/board/renesas/koelsch/Makefile
@@ -6,4 +6,4 @@
 # SPDX-License-Identifier: GPL-2.0
 #
 
-obj-y	:= koelsch.o qos.o
+obj-y	:= koelsch.o qos.o ../rcar-gen2-common/common.o