diff --git a/plugins/housekeeper/DiskUsageDashlet.inc.php b/plugins/housekeeper/DiskUsageDashlet.inc.php
index afec2f2..2237bcf 100644
--- a/plugins/housekeeper/DiskUsageDashlet.inc.php
+++ b/plugins/housekeeper/DiskUsageDashlet.inc.php
@@ -168,13 +168,12 @@ class DiskUsageDashlet extends KTBaseDashlet
 		$rootUrl = $config->get('KnowledgeTree/rootUrl');
 
 		$dispatcherURL = $oPlugin->getURLPath('HouseKeeperDispatcher.php');
-		if (!empty($rootUrl)) $dispatcherURL .= $rootUrl . $dispatcherURL;
-        if ( substr( $dispatcherURL, 0,1 ) == '/' || substr( $dispatcherURL, 0,1 ) == '\\')
+		if (!empty($rootUrl)) $dispatcherURL = $rootUrl . $dispatcherURL;
+		$dispatcherURL = str_replace( '\\', '/', $dispatcherURL);
+        if ( substr( $dispatcherURL, 0,1 ) != '/')
 		{
-			$dispatcherURL = substr($dispatcherURL,1);
+			$dispatcherURL = '/'.$dispatcherURL;
 		}
-        $dispatcherURL = str_replace( '\\', '/', $dispatcherURL);
-
 
 		$aTemplateData = array(
 			'context' => $this,
diff --git a/plugins/housekeeper/FolderUsageDashlet.inc.php b/plugins/housekeeper/FolderUsageDashlet.inc.php
index 7c89ef3..cfaf8e1 100644
--- a/plugins/housekeeper/FolderUsageDashlet.inc.php
+++ b/plugins/housekeeper/FolderUsageDashlet.inc.php
@@ -155,13 +155,13 @@ class FolderUsageDashlet extends KTBaseDashlet
 		$rootUrl = $config->get('KnowledgeTree/rootUrl');
 
 		$dispatcherURL = $oPlugin->getURLPath('HouseKeeperDispatcher.php');
-		if (!empty($rootUrl)) $dispatcherURL .= $rootUrl . $dispatcherURL;
-        if ( substr( $dispatcherURL, 0,1 ) == '/' || substr( $dispatcherURL, 0,1 ) == '\\')
+		if (!empty($rootUrl)) $dispatcherURL = $rootUrl . $dispatcherURL;
+        $dispatcherURL = str_replace( '\\', '/', $dispatcherURL);
+        if ( substr( $dispatcherURL, 0,1 ) != '/')
 		{
-			$dispatcherURL = substr($dispatcherURL,1);
+			$dispatcherURL = '/'.$dispatcherURL;
 		}
-        $dispatcherURL = str_replace( '\\', '/', $dispatcherURL);
-		
+
         $this->getUsage();
 
 		$aTemplateData = array(