diff --git a/blocks/global_navigation_tree/block_global_navigation_tree.php b/blocks/global_navigation_tree/block_global_navigation_tree.php
index d8e18b95411..9f7a65966b0 100644
--- a/blocks/global_navigation_tree/block_global_navigation_tree.php
+++ b/blocks/global_navigation_tree/block_global_navigation_tree.php
@@ -164,7 +164,7 @@ class block_global_navigation_tree extends block_tree {
         $reloadicon->link->url->param('regenerate','navigation');
         $reloadicon->link->add_class('customcommand');
         $reloadicon->image->src = $OUTPUT->pix_url('t/reload');
-        $reloadicon->alt = get_string('reload');
+        $reloadicon->image->alt = get_string('reload');
         $reloadicon->title = get_string('reload');
         $this->content->footer .= $OUTPUT->action_icon($reloadicon);
 
diff --git a/blocks/settings_navigation_tree/block_settings_navigation_tree.php b/blocks/settings_navigation_tree/block_settings_navigation_tree.php
index 131b87f9a5f..d2a8783e60b 100644
--- a/blocks/settings_navigation_tree/block_settings_navigation_tree.php
+++ b/blocks/settings_navigation_tree/block_settings_navigation_tree.php
@@ -146,7 +146,7 @@ class block_settings_navigation_tree extends block_tree {
             $reloadicon->link->url = $url;
             $reloadicon->link->add_class('customcommand');
             $reloadicon->image->src = $OUTPUT->pix_url('t/reload');
-            $reloadicon->alt = get_string('reload');
+            $reloadicon->image->alt = get_string('reload');
             $reloadicon->title = get_string('reload');
 
             $this->content->footer .= $OUTPUT->action_icon($reloadicon);