diff --git a/mozilla/webtools/addons/README b/mozilla/webtools/addons/README
index 20bfde29105..9352ee9fb06 100644
--- a/mozilla/webtools/addons/README
+++ b/mozilla/webtools/addons/README
@@ -3,3 +3,7 @@ Installation
     Copy inc/config-dist.php to inc/config.php
     Define required information in inc/config.php
     Set apache as owner, chmod 700.
+    Set up your preview symlinik in order to use previews
+        mkdir ./images
+        cd images
+        ln -s /data/previews previews