diff --git a/src/wp-admin/includes/list-table.php b/src/wp-admin/includes/list-table.php
index dc900ca039..8120598a60 100644
--- a/src/wp-admin/includes/list-table.php
+++ b/src/wp-admin/includes/list-table.php
@@ -110,8 +110,9 @@ class _WP_List_Table_Compat extends WP_List_Table {
 		$columns = get_column_headers( $this->_screen );
 		$hidden = get_hidden_columns( $this->_screen );
 		$sortable = array();
+		$primary = $this->get_default_primary_column_name();
 
-		return array( $columns, $hidden, $sortable );
+		return array( $columns, $hidden, $sortable, $primary );
 	}
 
 	/**