diff --git a/mod/lesson/pagetypes/essay.php b/mod/lesson/pagetypes/essay.php
index 546a7db568a..9592180f68f 100644
--- a/mod/lesson/pagetypes/essay.php
+++ b/mod/lesson/pagetypes/essay.php
@@ -318,6 +318,9 @@ class lesson_display_answer_form_essay extends moodleform {
             }
         }
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
 
         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
diff --git a/mod/lesson/pagetypes/matching.php b/mod/lesson/pagetypes/matching.php
index 29775df2127..59bfd1e51ca 100644
--- a/mod/lesson/pagetypes/matching.php
+++ b/mod/lesson/pagetypes/matching.php
@@ -533,6 +533,9 @@ class lesson_display_answer_form_matching extends moodleform {
         $lessonid = $this->_customdata['lessonid'];
         $contents = $this->_customdata['contents'];
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
 
         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
diff --git a/mod/lesson/pagetypes/multichoice.php b/mod/lesson/pagetypes/multichoice.php
index 41ca4103d12..501b17b4dc9 100644
--- a/mod/lesson/pagetypes/multichoice.php
+++ b/mod/lesson/pagetypes/multichoice.php
@@ -488,6 +488,9 @@ class lesson_display_answer_form_multichoice_singleanswer extends moodleform {
             $attempt->answerid = null;
         }
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
 
         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
@@ -541,6 +544,9 @@ class lesson_display_answer_form_multichoice_multianswer extends moodleform {
         $lessonid = $this->_customdata['lessonid'];
         $contents = $this->_customdata['contents'];
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
 
         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
diff --git a/mod/lesson/pagetypes/numerical.php b/mod/lesson/pagetypes/numerical.php
index 9e5414a0e0f..f8f98e07ce9 100644
--- a/mod/lesson/pagetypes/numerical.php
+++ b/mod/lesson/pagetypes/numerical.php
@@ -276,6 +276,9 @@ class lesson_display_answer_form_numerical extends moodleform {
         $mform = $this->_form;
         $contents = $this->_customdata['contents'];
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
 
         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
diff --git a/mod/lesson/pagetypes/shortanswer.php b/mod/lesson/pagetypes/shortanswer.php
index 798b1800441..1bcc96f58c9 100644
--- a/mod/lesson/pagetypes/shortanswer.php
+++ b/mod/lesson/pagetypes/shortanswer.php
@@ -369,6 +369,9 @@ class lesson_display_answer_form_shortanswer extends moodleform {
             $attrs['size'] = round(strlen($placeholder) * 1.1);
         }
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
         $mform->addElement('hidden', 'id');
         $mform->setType('id', PARAM_INT);
diff --git a/mod/lesson/pagetypes/truefalse.php b/mod/lesson/pagetypes/truefalse.php
index 8c8056a48b3..ae8fbafebc8 100644
--- a/mod/lesson/pagetypes/truefalse.php
+++ b/mod/lesson/pagetypes/truefalse.php
@@ -382,6 +382,9 @@ class lesson_display_answer_form_truefalse extends moodleform {
             $attempt->answerid = null;
         }
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
 
         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));