diff --git a/lib/outputrenderers.php b/lib/outputrenderers.php
index 2e4618cd09..01fd150355 100644
--- a/lib/outputrenderers.php
+++ b/lib/outputrenderers.php
@@ -357,7 +357,7 @@ public function standard_footer_html() {
         if (!empty($CFG->debugpageinfo)) {
             $output .= '<div class="performanceinfo">This page is: ' . $this->page->debug_summary() . '</div>';
         }
-        if (debugging(null, DEBUG_DEVELOPER)) {  // Only in developer mode
+        if (debugging(null, DEBUG_DEVELOPER) and has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {  // Only in developer mode
             $output .= '<div class="purgecaches"><a href="'.$CFG->wwwroot.'/admin/purgecaches.php?confirm=1&amp;sesskey='.sesskey().'">'.get_string('purgecaches', 'admin').'</a></div>';
         }
         if (!empty($CFG->debugvalidators)) {