diff --git a/filemanager/inc/functions.inc.php b/filemanager/inc/functions.inc.php
index f8671376f7..414702e4ed 100644
--- a/filemanager/inc/functions.inc.php
+++ b/filemanager/inc/functions.inc.php
@@ -1,5 +1,5 @@
 <?php
 
-require ("./inc/main.inc.php");
+require (PHPGW_APP_INC . "/main.inc.php");
 
 ?>
diff --git a/filemanager/inc/main.inc.php b/filemanager/inc/main.inc.php
index e6b6606af7..5c2d425d5b 100755
--- a/filemanager/inc/main.inc.php
+++ b/filemanager/inc/main.inc.php
@@ -23,7 +23,7 @@ else
 
 define ("NULL", "");
 
-require ("./inc/db.inc.php");
+require (PHPGW_APP_INC . "/db.inc.php");
 
 /* Set up any initial db settings */
 db_init ();
@@ -47,7 +47,7 @@ define ('HTML_TEXT_NAVIGATION_BACK_TO_USER', "Back to file manager");
 # Need to include this here so they recognize the settings
 ###
 
-require ("./inc/html.inc.php");
+require (PHPGW_APP_INC . "/html.inc.php");
 
 ###
 # Define the list of file attributes.  Format is "internal_name" => "Displayed name"