diff --git a/app/controllers/admin/additional.php b/app/controllers/admin/additional.php
index 54d1908492df2e046378945943eed8b1bc70912a..a98da2004834a611f12e607dd50dca3a1f1a75ad 100644
--- a/app/controllers/admin/additional.php
+++ b/app/controllers/admin/additional.php
@@ -52,7 +52,7 @@ 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()) {