diff --git a/inc/inc.ClassExtensionMgr.php b/inc/inc.ClassExtensionMgr.php
index 1776eb79f..b65cec291 100644
--- a/inc/inc.ClassExtensionMgr.php
+++ b/inc/inc.ClassExtensionMgr.php
@@ -255,6 +255,9 @@ class SeedDMS_Extension_Mgr {
 				// Ignore "." and ".." folders
 				if( in_array(substr($file, strrpos($file, '/')+1), array('.', '..')) )
 					continue;
+				// Ignore all files and directories starting with a '.'
+				if( preg_match('#/\\.#', $file) )
+					continue;
 
 				$file = realpath($file);