diff --git a/Parsedown.php b/Parsedown.php
index 685d6df..27a35bf 100644
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -1142,7 +1142,7 @@ class Parsedown
 
     protected function inlineEmailTag($Excerpt)
     {
-        $commonMarkEmail = '[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9]'
+        $commonMarkEmail = '[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]++@[a-zA-Z0-9]'
             .'(?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?'
             .'(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*'
         ;