diff --git a/run-travis-ci.sh b/run-travis-ci.sh
index f48064a..c4e2459 100755
--- a/run-travis-ci.sh
+++ b/run-travis-ci.sh
@@ -3,6 +3,7 @@
 cd "$(dirname "$0")"
 
 ECUKES_EMACS=${ECUKES_EMACS:-$(which emacs)}
+export ECUKES_EMACS
 
 echo "*** Emacs version ***"
 echo "ECUKES_EMACS = $ECUKES_EMACS"