diff --git a/application/forms/AddNodeForm.php b/application/forms/AddNodeForm.php
index b44cfcc..9cf63ae 100644
--- a/application/forms/AddNodeForm.php
+++ b/application/forms/AddNodeForm.php
@@ -87,7 +87,6 @@ class AddNodeForm extends QuickForm
                 '&' => $this->translate('AND'),
                 '|' => $this->translate('OR'),
                 '!' => $this->translate('NOT'),
-                '<' => $this->translate('DEG'),
                 '1' => $this->translate('MIN 1'),
                 '2' => $this->translate('MIN 2'),
                 '3' => $this->translate('MIN 3'),