diff --git a/mod/quiz/accessrule/seb/rule.php b/mod/quiz/accessrule/seb/rule.php
index 54a7c2f2e00..9b5ed7a329c 100644
--- a/mod/quiz/accessrule/seb/rule.php
+++ b/mod/quiz/accessrule/seb/rule.php
@@ -530,11 +530,15 @@ class quizaccess_seb extends quiz_access_rule_base {
      * @return string A link to launch Safe Exam Browser.
      */
     private function get_launch_seb_button() : string {
-        global $OUTPUT;
-
+        // Rendering as a href and not as button in a form to circumvent browser warnings for sending to URL with unknown protocol.
         $seblink = \quizaccess_seb\link_generator::get_link($this->quiz->cmid, true, is_https());
 
-        return $OUTPUT->single_button($seblink, get_string('seblinkbutton', 'quizaccess_seb'), 'get');
+        $buttonlink = html_writer::start_tag('div', array('class' => 'singlebutton'));
+        $buttonlink .= html_writer::link($seblink, get_string('seblinkbutton', 'quizaccess_seb'),
+            ['class' => 'btn btn-secondary', 'title' => get_string('seblinkbutton', 'quizaccess_seb')]);
+        $buttonlink .= html_writer::end_tag('div');
+
+        return $buttonlink;
     }
 
     /**
@@ -543,11 +547,15 @@ class quizaccess_seb extends quiz_access_rule_base {
      * @return string A link to launch Safe Exam Browser.
      */
     private function get_download_config_button() : string {
-        global $OUTPUT;
-
+        // Rendering as a href and not as button in a form to circumvent browser warnings for sending to URL with unknown protocol.
         $httplink = \quizaccess_seb\link_generator::get_link($this->quiz->cmid, false, is_https());
 
-        return $OUTPUT->single_button($httplink, get_string('httplinkbutton', 'quizaccess_seb'), 'get');
+        $buttonlink = html_writer::start_tag('div', array('class' => 'singlebutton'));
+        $buttonlink .= html_writer::link($httplink, get_string('httplinkbutton', 'quizaccess_seb'),
+            ['class' => 'btn btn-secondary', 'title' => get_string('httplinkbutton', 'quizaccess_seb')]);
+        $buttonlink .= html_writer::end_tag('div');
+
+        return $buttonlink;
     }
 
     /**