diff --git a/includes/class-freemius.php b/includes/class-freemius.php
index <HASH>..<HASH> 100755
--- a/includes/class-freemius.php
+++ b/includes/class-freemius.php
@@ -14124,7 +14124,7 @@
 

                 $result->error = (object) array(

                     'type'    => $error_type,

-                    'message' => $response->get_error_message(),

+                    'message' => $this->add_filter( 'opt_in_error_message', $response->get_error_message() ),

                     'code'    => $error_code,

                     'http'    => 402

                 );
[activation] [error-handling] [new-filter] Added a filter to optionally modify the error returned from the backend before it is shown to the site owner.