diff --git a/Makefile.inc b/Makefile.inc
index cb0b21c..a193158 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -38,7 +38,9 @@
 #######################################################################
 # Basic component discovery
 MAINBOARDDIR=$(call strip_quotes,$(CONFIG_MAINBOARD_DIR))
+VARIANT_DIR:=$(call strip_quotes,$(CONFIG_VARIANT_DIR))
 export MAINBOARDDIR
+export VARIANT_DIR
 
 ## Final build results, which CBFSTOOL uses to create the final
 ## rom image file, are placed under $(objcbfs).