diff --git a/src/opnsense/mvc/app/models/OPNsense/Auth/FieldTypes/StoreB64Field.php b/src/opnsense/mvc/app/models/OPNsense/Auth/FieldTypes/StoreB64Field.php
index 9b85e6539..6b9a6e724 100644
--- a/src/opnsense/mvc/app/models/OPNsense/Auth/FieldTypes/StoreB64Field.php
+++ b/src/opnsense/mvc/app/models/OPNsense/Auth/FieldTypes/StoreB64Field.php
@@ -51,5 +51,7 @@ class StoreB64Field extends TextField
             /* store value as base64 */
             return parent::setValue(base64_encode($value));
         }
+
+        return parent::setValue('');
     }
 }