diff --git a/Makefile b/Makefile
index 30f8a8a4b..0473b9308 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 VERSION=$(shell php -r 'include("inc/inc.Version.php"); $$v=new SeedDMS_Version(); echo $$v->version();')
 SRC=CHANGELOG inc conf utils index.php .htaccess languages op out controllers doc TODO LICENSE webdav install restapi pdfviewer
-VIEWS ?= bootstrap
+VIEWS ?= bootstrap bootstrap4
 
 NODISTFILES=utils/importmail.php utils/seedddms-importmail utils/remote-email-upload utils/remote-upload utils/da-bv-reminder.php utils/seeddms-da-bv-reminder .svn .gitignore