diff --git a/renderer.php b/renderer.php
index 521f73c..ab5fd33 100644
--- a/renderer.php
+++ b/renderer.php
@@ -201,14 +201,16 @@ public function display_meeting_detail ($meetingdetail, $cmid, $groupid = 0) {
         $html .= html_writer::empty_tag('input', $param);
         $html .= html_writer::end_tag('div');
 
-        $param = array('class' => 'aconbtnroles');
-        $html .= html_writer::start_tag('div', $param);
-        $param = array('type'=>'submit',
-                       'value'=>get_string('selectparticipants','adobeconnect'),
-                       'name'=>'participants',
-                       );
-        $html .= html_writer::empty_tag('input', $param);
-        $html .= html_writer::end_tag('div');
+        if ($meetingdetail->participants) {
+            $param = array('class' => 'aconbtnroles');
+            $html .= html_writer::start_tag('div', $param);
+            $param = array('type'=>'submit',
+                           'value'=>get_string('selectparticipants','adobeconnect'),
+                           'name'=>'participants',
+                           );
+            $html .= html_writer::empty_tag('input', $param);
+            $html .= html_writer::end_tag('div');
+        }
 
         $html .= html_writer::end_tag('div');
 
@@ -292,4 +294,4 @@ function display_no_groups_message() {
         $html = html_writer::tag('p', get_string('usergrouprequired', 'adobeconnect'));
         return $html;
     }
-}
\ No newline at end of file
+}