diff --git a/lib/classes/output/icon_system_fontawesome.php b/lib/classes/output/icon_system_fontawesome.php
index be6e0204fa6..0d716fd6032 100644
--- a/lib/classes/output/icon_system_fontawesome.php
+++ b/lib/classes/output/icon_system_fontawesome.php
@@ -279,7 +279,7 @@ class icon_system_fontawesome extends icon_system_font {
             'core:i/hierarchylock' => 'fa-lock',
             'core:i/import' => 'fa-level-up',
             'core:i/info' => 'fa-info',
-            'core:i/invalid' => 'fa-exclamation text-danger',
+            'core:i/invalid' => 'fa-times text-danger',
             'core:i/item' => 'fa-circle',
             'core:i/loading' => 'fa-circle-o-notch fa-spin',
             'core:i/loading_small' => 'fa-circle-o-notch fa-spin',
@@ -342,7 +342,7 @@ class icon_system_fontawesome extends icon_system_font {
             'core:i/userevent' => 'fa-user',
             'core:i/user' => 'fa-user',
             'core:i/users' => 'fa-users',
-            'core:i/valid' => 'fa-check-square-o text-success',
+            'core:i/valid' => 'fa-check text-success',
             'core:i/warning' => 'fa-exclamation text-warning',
             'core:i/withsubcat' => 'fa-plus-square',
             'core:m/USD' => 'fa-usd',