diff --git a/shrtr.module b/shrtr.module
index d6f4496..2a17abe 100644
--- a/shrtr.module
+++ b/shrtr.module
@@ -130,9 +130,13 @@ function shrtr_new_form_submit($form, &$form_state) {
   else {
     $expire = 0;
   }
-
+  
+  $regex = '/(^http:\/\/|^ftp:\/\/|^news:|^https:\/\/|mailto:)([\x21-\x7E-]+\.)/';
+  $url = $form_state['values']['url'];
+  if(!preg_match($regex, $url, $matches))$url="http://".$url; 
+  
   $record = array(
-    'url' => $form_state['values']['url'],
+    'url' => $url,
     'uid' => $user->uid,
     'created' => REQUEST_TIME,
     'expire' => $expire,