diff --git a/locallib.php b/locallib.php
index ca57d88e..6a719b95 100644
--- a/locallib.php
+++ b/locallib.php
@@ -287,6 +287,13 @@ private function process_action_start_distribution() {
                         \core\output\notification::NOTIFY_SUCCESS);
             }
         }
+        $raters = $this->get_raters_in_course();
+        $completion = new completion_info($this->course);
+        if ($completion->is_enabled($this->coursemodule)) {
+            foreach ($raters as $rater) {
+                $completion->update_state($this->coursemodule, COMPLETION_UNKNOWN, $rater->id);
+            }
+        }
         redirect(new moodle_url('/mod/ratingallocate/view.php',
                 array('id' => $this->coursemodule->id)));
         return;
@@ -664,6 +671,13 @@ private function process_action_manual_allocation() {
                                 array('id' => $this->coursemodule->id, 'action' => ACTION_MANUAL_ALLOCATION)));
                     }
                 }
+                $raters = $this->get_raters_in_course();
+                $completion = new completion_info($this->course);
+                if ($completion->is_enabled($this->coursemodule)) {
+                    foreach ($raters as $rater) {
+                        $completion->update_state($this->coursemodule, COMPLETION_UNKNOWN, $rater->id);
+                    }
+                }
             }
             $output .= $OUTPUT->heading(get_string('manual_allocation', RATINGALLOCATE_MOD_NAME), 2);