diff --git a/docs/en/programmers/api-functions/api-template-exists.xml b/docs/en/programmers/api-functions/api-template-exists.xml
index 8f35edf3..45ffcdef 100644
--- a/docs/en/programmers/api-functions/api-template-exists.xml
+++ b/docs/en/programmers/api-functions/api-template-exists.xml
@@ -47,7 +47,7 @@
 <?php
 
 // set the filename eg index.inc.tpl
-$mid_template = $_GET['page'].'inc.tpl';
+$mid_template = $_GET['page'].'.inc.tpl';
 
 if( !$smarty->template_exists($mid_template) ){
     $mid_template = 'page_not_found.inc.tpl';