Added 'application/msexcel' to config/mimes.php for .xls files.
diff --git a/system/application/config/mimes.php b/system/application/config/mimes.php
index 10acfad..438f610 100644
--- a/system/application/config/mimes.php
+++ b/system/application/config/mimes.php
@@ -29,7 +29,7 @@
 				'smi'	=>	'application/smil',
 				'smil'	=>	'application/smil',
 				'mif'	=>	'application/vnd.mif',
-				'xls'	=>	array('application/excel', 'application/vnd.ms-excel'),
+				'xls'	=>	array('application/excel', 'application/vnd.ms-excel', 'application/msexcel'),
 				'ppt'	=>	array('application/powerpoint', 'application/vnd.ms-powerpoint'),
 				'wbxml'	=>	'application/wbxml',
 				'wmlc'	=>	'application/wmlc',
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 245f218..dbe4c66 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -82,6 +82,11 @@
 			<li>Added ability to force lowercase for url_title() in the <a href="helpers/url_helper.html">URL helper</a>.</li>
 		</ul>
 	</li>
+	<li>Other Changes
+		<ul>
+			<li>Added 'application/msexcel' to config/mimes.php for .xls files.</li>
+		</ul>
+	</li>
 </ul>
 
 <h3>Bug fixes for 1.7.1</h3>