diff --git a/config_defaults_inc.php b/config_defaults_inc.php
index bc477af742..373b1ec476 100644
--- a/config_defaults_inc.php
+++ b/config_defaults_inc.php
@@ -2931,6 +2931,7 @@
 		'csv'	=> 'csv.gif',
 		'cxx'	=> 'cpp.gif',
 		'doc'	=> 'doc.gif',
+		'docx'	=> 'doc.gif',
 		'dot'	=> 'doc.gif',
 		'eml'	=> 'eml.gif',
 		'htm'	=> 'html.gif',
@@ -2954,6 +2955,7 @@
 		'pot'	=> 'pot.gif',
 		'pps'	=> 'pps.gif',
 		'ppt'	=> 'ppt.gif',
+		'pptx'	=> 'ppt.gif',
 		'pub'	=> 'pub.gif',
 		'rar'	=> 'zip.gif',
 		'reg'	=> 'reg.gif',
@@ -2977,6 +2979,7 @@
 		'wri'	=> 'wri.gif',
 		'xlk'	=> 'xls.gif',
 		'xls'	=> 'xls.gif',
+		'xlsx'	=> 'xls.gif',
 		'xlt'	=> 'xlt.gif',
 		'xml'	=> 'xml.gif',
 		'zip'	=> 'zip.gif',