diff --git a/badges/renderer.php b/badges/renderer.php
index 307675db55c..c151ef378aa 100644
--- a/badges/renderer.php
+++ b/badges/renderer.php
@@ -113,13 +113,13 @@ class core_badges_renderer extends plugin_renderer_base {
                     'type' => 'submit',
                     'name' => 'award',
                     'value' => $this->output->larrow() . ' ' . get_string('award', 'badges'),
-                    'class' => 'actionbutton')
+                    'class' => 'actionbutton btn btn-secondary')
                 );
         $actioncell->text .= html_writer::empty_tag('input', array(
                     'type' => 'submit',
                     'name' => 'revoke',
                     'value' => get_string('revoke', 'badges') . ' ' . $this->output->rarrow(),
-                    'class' => 'actionbutton')
+                    'class' => 'actionbutton btn btn-secondary')
                 );
         $actioncell->text .= html_writer::end_tag('div', array());
         $actioncell->attributes['class'] = 'actions';