diff --git a/client/src/dynamic-logic.js b/client/src/dynamic-logic.js
index 34b2bc6e96..35f3d1fbde 100644
--- a/client/src/dynamic-logic.js
+++ b/client/src/dynamic-logic.js
@@ -162,7 +162,7 @@ Espo.define('dynamic-logic', [], function () {
                 if (Array.isArray(setValue)) {
                     return !!setValue.length;
                 }
-                return setValue !== null && (setValue !== '');
+                return setValue !== null && (setValue !== '') && typeof setValue !== 'undefined';
             } else if (type === 'isTrue') {
                 return !!setValue;
             } else if (type === 'isFalse') {