diff --git a/app/controllers/admin/additional.php b/app/controllers/admin/additional.php
index eb98db8dc7d0eaf658174261e6aaa83389ed1700..b87c4169c045aa2d583874d26d2be8d1b444a814 100644
--- a/app/controllers/admin/additional.php
+++ b/app/controllers/admin/additional.php
@@ -51,7 +51,7 @@ class Admin_AdditionalController extends AuthenticatedController
             }
             // purge data
             if (Request::submitted('delete')) {
-                DatafieldEntryModel::deleteBySQL('sec_rage_id = ?', [$this->course->id]);
+                DatafieldEntryModel::deleteBySQL('sec_range_id = ?', [$this->course->id]);
             }
 
             if ($this->course->store()) {