diff --git a/user_guide_src/source/testing/response/012.php b/user_guide_src/source/testing/response/012.php
index 671330ac32a4..0af2b74f0662 100644
--- a/user_guide_src/source/testing/response/012.php
+++ b/user_guide_src/source/testing/response/012.php
@@ -1,3 +1,3 @@
 <?php
 
-$result->assertSessionMissin('logged_in');
+$result->assertSessionMissing('logged_in');