diff --git a/mod/workshop/form/comments/backup/moodle1/lib.php b/mod/workshop/form/comments/backup/moodle1/lib.php
index 5d557a443c6..2e9a0c01e43 100644
--- a/mod/workshop/form/comments/backup/moodle1/lib.php
+++ b/mod/workshop/form/comments/backup/moodle1/lib.php
@@ -32,8 +32,13 @@ class moodle1_workshopform_comments_handler extends moodle1_workshopform_handler
 
     /**
      * Converts <ELEMENT> into <workshopform_comments_dimension>
+     *
+     * @param array $data legacy element data
+     * @param array $raw raw element data
+     *
+     * @return array converted
      */
-    public function process_legacy_element($data, $raw) {
+    public function process_legacy_element(array $data, array $raw) {
         // prepare a fake record and re-use the upgrade logic
         $fakerecord = (object)$data;
         $converted = (array)workshopform_comments_upgrade_element($fakerecord, 12345678);
diff --git a/mod/workshop/form/numerrors/backup/moodle1/lib.php b/mod/workshop/form/numerrors/backup/moodle1/lib.php
index d2c63103811..e18a2f26701 100644
--- a/mod/workshop/form/numerrors/backup/moodle1/lib.php
+++ b/mod/workshop/form/numerrors/backup/moodle1/lib.php
@@ -49,9 +49,12 @@ class moodle1_workshopform_numerrors_handler extends moodle1_workshopform_handle
     /**
      * Converts <ELEMENT> into <workshopform_numerrors_dimension> and stores it for later writing
      *
+     * @param array $data legacy element data
+     * @param array $raw raw element data
+     *
      * @return array to be written to workshop.xml
      */
-    public function process_legacy_element($data, $raw) {
+    public function process_legacy_element(array $data, array $raw) {
 
         $workshop = $this->parenthandler->get_current_workshop();
 
diff --git a/mod/workshop/form/rubric/backup/moodle1/lib.php b/mod/workshop/form/rubric/backup/moodle1/lib.php
index be0a6c6b11a..fe604f807d2 100644
--- a/mod/workshop/form/rubric/backup/moodle1/lib.php
+++ b/mod/workshop/form/rubric/backup/moodle1/lib.php
@@ -46,8 +46,11 @@ class moodle1_workshopform_rubric_handler extends moodle1_workshopform_handler {
 
     /**
      * Processes one <ELEMENT>
+     *
+     * @param array $data legacy element data
+     * @param array $raw raw element data
      */
-    public function process_legacy_element($data, $raw) {
+    public function process_legacy_element(array $data, array $raw) {
         $this->elements[] = $data;
         $this->rubrics[$data['id']] = array();
     }