diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index a322d35..55718c6 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -107,6 +107,7 @@
 	<li>Fixed a bug in reduce_double_slashes() in the String Helper to properly remove duplicate leading slashes (#7585)</li>
 	<li>Fixed a bug in values_parsing() of the XML-RPC library which prevented NULL variables typed as 'string' from being handled properly.</li>
 	<li>Fixed a bug were form_open_multipart() didn't accept string attribute arguments (#10930).</li>
+	<li>Fixed a bug (#10470) where <kdb>get_mime_by_extension()</kbd> case sensitive.</li>
 </ul>
 
 <h2>Version 1.7.2</h2>