diff --git a/user_guide_src/source/libraries/user_agent/005.php b/user_guide_src/source/libraries/user_agent/005.php
index 944c709759..80aad0f42c 100644
--- a/user_guide_src/source/libraries/user_agent/005.php
+++ b/user_guide_src/source/libraries/user_agent/005.php
@@ -1,5 +1,5 @@
 <?php
 
 if ($agent->isReferral()) {
-    echo $agent->referrer();
+    echo $agent->getReferrer();
 }