diff --git a/main/auth/external_login/functions.inc.php b/main/auth/external_login/functions.inc.php
index 0e470626f3..435ef4c365 100755
--- a/main/auth/external_login/functions.inc.php
+++ b/main/auth/external_login/functions.inc.php
@@ -105,6 +105,9 @@ function external_add_user($u)
     if (empty($u['status'])) {
         $u['status'] = 5;
     }
+    if (!isset($u['email'])) {
+        $u['email'] = '';
+    }
     if (!isset($u['official_code'])) {
         $u['official_code'] = '';
     }