diff --git a/mod/lesson/classes/external.php b/mod/lesson/classes/external.php
index 7763d6e3fe8..70ff4357fc1 100644
--- a/mod/lesson/classes/external.php
+++ b/mod/lesson/classes/external.php
@@ -993,8 +993,10 @@ class mod_lesson_external extends external_api {
         if ($returncontents || $canmanage || (lesson_displayleftif($lesson) && $page->displayinmenublock && $page->display)) {
             $pagedata->title = external_format_string($page->title, $context->id);
 
+            $options = array('noclean' => true);
             list($pagedata->contents, $pagedata->contentsformat) =
-                external_format_text($page->contents, $page->contentsformat, $context->id, 'mod_lesson', 'page_contents', $page->id);
+                external_format_text($page->contents, $page->contentsformat, $context->id, 'mod_lesson', 'page_contents', $page->id,
+                    $options);
 
         }
         return $pagedata;
@@ -1309,10 +1311,13 @@ class mod_lesson_external extends external_api {
                             $answer[$prop] = $a->{$prop};
                         }
 
+                        $options = array('noclean' => true);
                         list($answer['answer'], $answer['answerformat']) =
-                            external_format_text($a->answer, $a->answerformat, $context->id, 'mod_lesson', 'page_answers', $a->id);
+                            external_format_text($a->answer, $a->answerformat, $context->id, 'mod_lesson', 'page_answers', $a->id,
+                                $options);
                         list($answer['response'], $answer['responseformat']) =
-                            external_format_text($a->response, $a->responseformat, $context->id, 'mod_lesson', 'page_responses', $a->id);
+                            external_format_text($a->response, $a->responseformat, $context->id, 'mod_lesson', 'page_responses',
+                                $a->id, $options);
                     }
                     $answers[] = $answer;
                 }