diff --git a/less/_import-bs-less.less b/less/_import-bs-less.less
index 19b26852..8a47b144 100644
--- a/less/_import-bs-less.less
+++ b/less/_import-bs-less.less
@@ -1,2 +1,3 @@
-@import "../bower_components/bootstrap/less/variables.less";
+@import (optional) "../../bootstrap/less/variables.less";
+@import (optional) "../bower_components/bootstrap/less/variables.less";
 //@import "../bower_components/bootstrap/less/mixins.less";