diff --git a/front/core/components/textfield/textfield.js b/front/core/components/textfield/textfield.js
index 88a585eda..8d2964b9b 100644
--- a/front/core/components/textfield/textfield.js
+++ b/front/core/components/textfield/textfield.js
@@ -15,7 +15,7 @@ export default class Textfield extends Input {
         this.hasMouseIn = false;
 
         this.input.addEventListener('keydown', () => {
-            if (!this.oldValue)
+            if (this.oldValue === undefined)
                 this.saveOldValue();
         });
         this.input.addEventListener('keyup', e => {