diff --git a/phpBB/docs/coding-guidelines.html b/phpBB/docs/coding-guidelines.html
index 9e07290697..9b5c668880 100644
--- a/phpBB/docs/coding-guidelines.html
+++ b/phpBB/docs/coding-guidelines.html
@@ -1122,9 +1122,6 @@ append_sid("{$phpbb_root_path}memberlist.$phpEx", 'mode=group&
 	<p>Some of these functions are only chosen over others because of personal preference and have no benefit other than maintaining consistency throughout the code.</p>
 
 	<ul>
-		<li>
-			<p>Use <code>sizeof</code> instead of <code>count</code></p>
-		</li>
 		<li>
 			<p>Use <code>strpos</code> instead of <code>strstr</code></p>
 		</li>