diff --git a/mod/lesson/pagetypes/essay.php b/mod/lesson/pagetypes/essay.php
index cceef9ad8b4..c15df389e55 100644
--- a/mod/lesson/pagetypes/essay.php
+++ b/mod/lesson/pagetypes/essay.php
@@ -279,6 +279,9 @@ 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 1a2c8d1b526..fa91855157c 100644
--- a/mod/lesson/pagetypes/matching.php
+++ b/mod/lesson/pagetypes/matching.php
@@ -518,6 +518,9 @@ 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 c22a6ea0bb4..4286a3f37a5 100644
--- a/mod/lesson/pagetypes/multichoice.php
+++ b/mod/lesson/pagetypes/multichoice.php
@@ -476,6 +476,9 @@ 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'));
@@ -529,6 +532,9 @@ 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 6a1b00b9708..0c937183383 100644
--- a/mod/lesson/pagetypes/numerical.php
+++ b/mod/lesson/pagetypes/numerical.php
@@ -264,6 +264,9 @@ 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 3b5c9a230db..c2b1485d2ed 100644
--- a/mod/lesson/pagetypes/shortanswer.php
+++ b/mod/lesson/pagetypes/shortanswer.php
@@ -350,6 +350,9 @@ class lesson_display_answer_form_shortanswer extends moodleform {
             }
         }
 
+        // Disable shortforms.
+        $mform->setDisableShortforms();
+
         $mform->addElement('header', 'pageheader');
 
         $mform->addElement('html', $OUTPUT->container($contents, 'contents'));
diff --git a/mod/lesson/pagetypes/truefalse.php b/mod/lesson/pagetypes/truefalse.php
index c0376c6bb27..d09cd5dbe15 100644
--- a/mod/lesson/pagetypes/truefalse.php
+++ b/mod/lesson/pagetypes/truefalse.php
@@ -367,6 +367,9 @@ 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'));