diff --git a/tests/docker/travis b/tests/docker/travis
index d345393ced..47c03677d6 100755
--- a/tests/docker/travis
+++ b/tests/docker/travis
@@ -18,4 +18,5 @@ cmdfile=/tmp/travis_cmd_list.sh
 $QEMU_SRC/tests/docker/travis.py $QEMU_SRC/.travis.yml > $cmdfile
 chmod +x $cmdfile
 cd "$QEMU_SRC"
+unset BUILD_DIR SRC_DIR
 $cmdfile