diff --git a/src/Processor.php b/src/Processor.php
index ae17061..913909a 100644
--- a/src/Processor.php
+++ b/src/Processor.php
@@ -144,7 +144,7 @@ private function add_hooks() {
 
 		// Confirmation (@see GFFormDisplay::handle_confirmation).
 		// @link http://www.gravityhelp.com/documentation/page/Gform_confirmation.
-		add_filter( 'gform_confirmation_' . $this->form_id, [ $this, 'confirmation' ], 10, 42 );
+		add_filter( 'gform_confirmation_' . $this->form_id, [ $this, 'confirmation' ], 10, 2 );
 
 		/*
 		 * After submission.