diff --git a/webgoat-lessons/csrf/src/main/resources/html/CSRF.html b/webgoat-lessons/csrf/src/main/resources/html/CSRF.html
index 64f8c03ab..b85568f08 100644
--- a/webgoat-lessons/csrf/src/main/resources/html/CSRF.html
+++ b/webgoat-lessons/csrf/src/main/resources/html/CSRF.html
@@ -114,7 +114,7 @@
     </div>
 
     <div class="lesson-page-wrapper">
-        <div class="adoc-content" th:replace="doc:CSRF_Impact_Defense.adocc"></div>
+        <div class="adoc-content" th:replace="doc:CSRF_Impact_Defense.adoc"></div>
     </div>
     <!--</div>-->