diff --git a/client/src/views/fields/varchar.js b/client/src/views/fields/varchar.js
index ceb35d0f5b..bdc4c918aa 100644
--- a/client/src/views/fields/varchar.js
+++ b/client/src/views/fields/varchar.js
@@ -371,7 +371,8 @@ define('views/fields/varchar', ['views/fields/base', 'helpers/reg-exp-pattern'],
             let value = this.$element.val().toString().trim();
 
             if (!value) {
-                return null;
+                // @todo Change to `null` in v7.4 (and for all other fields).
+                return false;
             }
 
             return {