diff --git a/lib/modinfolib.php b/lib/modinfolib.php
index 287c8142b9c..0195d7756a7 100644
--- a/lib/modinfolib.php
+++ b/lib/modinfolib.php
@@ -1316,6 +1316,7 @@ class cm_info implements IteratorAggregate {
      * @return string
      */
     public function get_formatted_name($options = array()) {
+        global $CFG;
         $options = (array)$options;
         if (!isset($options['context'])) {
             $options['context'] = $this->get_context();
@@ -1323,7 +1324,9 @@ class cm_info implements IteratorAggregate {
         // Improve filter performance by preloading filter setttings for all
         // activities on the course (this does nothing if called multiple
         // times).
-        filter_preload_activities($this->get_modinfo());
+        if (!empty($CFG->filterall)) {
+            filter_preload_activities($this->get_modinfo());
+        }
         return format_string($this->get_name(), true,  $options);
     }