diff --git a/includes/classes/class-formgent.php b/includes/classes/class-formgent.php
index 00a1cbbd9..3c0374155 100644
--- a/includes/classes/class-formgent.php
+++ b/includes/classes/class-formgent.php
@@ -247,7 +247,7 @@ protected function get_responses_query() {
                         $join->on_raw( 'post.ID = CAST(response_meta.meta_value AS UNSIGNED)' );
                     }
                 )
-                ->where_not_is_null( 'post.post_author' )
+                ->where_not_null( 'post.post_author' )
                 ->where( 'post.post_author', $user_id )
                 ->where( 'post.post_status', 'publish' )
                 ->where( 'response.is_completed', 1 );