diff --git a/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Computer_getSoftwareReleaseUrlStringList.py b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Computer_getSoftwareReleaseUrlStringList.py
index 25a5ad345ccb94f3ab70afaf6a9909c745805034..b42f481df22a660c140190e0225e988baca0bb6a 100644
--- a/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Computer_getSoftwareReleaseUrlStringList.py
+++ b/master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Computer_getSoftwareReleaseUrlStringList.py
@@ -8,4 +8,4 @@ for software_installation in context.getPortalObject().portal_catalog(
     url_string = software_installation.getUrlString()
     if url_string:
       url_string_list.append(url_string)
-return url_string_list
+return list(set(url_string_list))