diff --git a/plugins/ktstandard/ImmutableActionPlugin.php b/plugins/ktstandard/ImmutableActionPlugin.php
index 555b4c9..00a6c9a 100644
--- a/plugins/ktstandard/ImmutableActionPlugin.php
+++ b/plugins/ktstandard/ImmutableActionPlugin.php
@@ -60,7 +60,8 @@ class KTDocumentImmutableAction extends KTDocumentAction {
     var $sName = "ktcore.actions.document.immutable";
     var $_sShowPermission = 'ktcore.permissions.security';
     var $_bMutator = true;
-
+	var $_bMutationAllowedByAdmin = false;
+	
     function getDisplayName() {
         return _kt('Make immutable');
     }