diff --git a/2.-Installation-guide.md b/2.-Installation-guide.md
index 1ed5414..c0a4b8c 100644
--- a/2.-Installation-guide.md
+++ b/2.-Installation-guide.md
@@ -57,7 +57,7 @@ cd /var/www && ln -s ../../exports/gitlab/copri4
 mkdir /var/log/copri4 && chown www-data /var/log/copri4
 ```
 
-Mainly for the frontend user-interface we use some external open-source icons and javascript - css libraries which have to be installed.
+Mainly for the frontend user-interface we use some external open-source icons and javascript - css libraries that can be included via the respective CDN or by download via the "copri4external" path. In the configuration file "global.cfg" there are some variables named bootstrap and jquery whose values have to be adjusted according to the library versions. 
 ```
 mkdir /var/www/copri4external && cd /var/www/copri4external
 ```