diff --git a/src/Makefile b/src/Makefile
index 4d227ef169..f884c68f70 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -438,6 +438,7 @@ CFLAGS += $(call cc-option,-Wno-pointer-sign,)
 export LBBUILD_IMAGE ?= linuxbios.rom startup_code.rom 
 
 
+core-y := mainboard/
 ifeq ($(LBBUILD_COMPRESSORS),)
 core-y		+=  compressors