diff --git a/projects/common/models/elements/compound-elements/cloze/cloze-child-elements/toggle-button.ts b/projects/common/models/elements/compound-elements/cloze/cloze-child-elements/toggle-button.ts
index 1910715ae5e5ca8b97cde8d6c61714217b5ddc6e..054aa7d43a0b8275429fee8783d2a0aa82740b5e 100644
--- a/projects/common/models/elements/compound-elements/cloze/cloze-child-elements/toggle-button.ts
+++ b/projects/common/models/elements/compound-elements/cloze/cloze-child-elements/toggle-button.ts
@@ -59,7 +59,7 @@ export class ToggleButtonElement extends InputElement implements ToggleButtonPro
       type: 'integer',
       format: '',
       multiple: false,
-      nullable: !this.value && this.value === 0,
+      nullable: false,
       values: this.getAnswerSchemeValues(),
       valuesComplete: true
     };