diff --git a/ucs-4.0-1/management/univention-management-console-module-appcenter/umc/js/appcenter/AppInstallationsItem.js b/ucs-4.0-1/management/univention-management-console-module-appcenter/umc/js/appcenter/AppInstallationsItem.js
index 524ec9d..8f01538 100644
--- a/ucs-4.0-1/management/univention-management-console-module-appcenter/umc/js/appcenter/AppInstallationsItem.js
+++ b/ucs-4.0-1/management/univention-management-console-module-appcenter/umc/js/appcenter/AppInstallationsItem.js
@@ -142,7 +142,7 @@ define([
 			}
 			if (this.webInterface) {
 				var url = this.webInterface;
-				if (this.webInterface[0] == '/' && !this.isLocal()) {
+				if (/^(:\d+)?\//.test(url) && !this.isLocal()) {
 					url = lang.replace('{protocol}//{host}{webInterface}', {
 						protocol: window.location.protocol,
 						host: host,
diff --git a/ucs-4.0-1/services/univention-apache/js/ucs/startsite.js b/ucs-4.0-1/services/univention-apache/js/ucs/startsite.js
index a1f339c..c94b487 100644
--- a/ucs-4.0-1/services/univention-apache/js/ucs/startsite.js
+++ b/ucs-4.0-1/services/univention-apache/js/ucs/startsite.js
@@ -209,6 +209,9 @@ define([
 			array.forEach(['link', 'icon', 'label', 'description'], lang.hitch(this, function(ikey) {
 				localizedProps[ikey] = this._localizeString(props[ikey]);
 			}));
+			if (/^:\d+\//.test(localizedProps.link)) {
+				localizedProps.link = window.location.protocol + '//' + window.location.hostname + localizedProps.link;
+			}
 			var node = domConstruct.toDom(lang.replace(
 				'<div class="umcGalleryWrapperItem col-xxs-12 col-xs-6 col-sm-6 col-md-4" id="{id}">\n'
 				+ '	<a href="{link}">\n'