1 files changed, 6 insertions, 0 deletions
diff --git a/lib/plugins/config/settings/extra.class.php b/lib/plugins/config/settings/extra.class.php
index 0aafd2400..715acb53b 100644
--- a/lib/plugins/config/settings/extra.class.php
+++ b/lib/plugins/config/settings/extra.class.php
@@ -78,3 +78,9 @@ if (!class_exists('setting_im_convert')) {
     }
   }
 }
+
+if (!class_exists('setting_fieldset')) {
+  class setting_fieldset extends setting_string {
+      //do-nothing class used to detect the 'fieldset' type.
+  }
+}