diff --git a/mod/lesson/pagetypes/shortanswer.php b/mod/lesson/pagetypes/shortanswer.php
index f504bd3eadb..e05e5f2ef77 100644
--- a/mod/lesson/pagetypes/shortanswer.php
+++ b/mod/lesson/pagetypes/shortanswer.php
@@ -78,7 +78,8 @@ class lesson_page_type_shortanswer extends lesson_page {
         $answers = $this->get_answers();
         foreach ($answers as $answer) {
             $i++;
-            $expectedanswer  = $answer->answer; // for easier handling of $answer->answer
+            // Applying PARAM_TEXT as it is applied to the answer submitted by the user.
+            $expectedanswer  = clean_param($answer->answer, PARAM_TEXT);
             $ismatch         = false;
             $markit          = false;
             $useregexp       = ($this->qoption);