diff --git a/inc/parser/handler.php b/inc/parser/handler.php
index b36fd142b8c38d9b9ad6d36083638cbce6eb3e5c..41449d824ee3e5b29213f1872b0571c977ffb477 100644
--- a/inc/parser/handler.php
+++ b/inc/parser/handler.php
@@ -455,7 +455,7 @@ class Doku_Handler {
 
         //decide which kind of link it is
 
-        if ( preg_match('/^[a-zA-Z\.]+>{1}.*$/u',$link[0]) ) {
+        if ( preg_match('/^[a-zA-Z0-9\.]+>{1}.*$/u',$link[0]) ) {
         // Interwiki
             $interwiki = preg_split('/>/u',$link[0]);
             $this->_addCall(