diff --git a/ui/src/app/extension/extensions-forms/extension-form-mqtt.tpl.html b/ui/src/app/extension/extensions-forms/extension-form-mqtt.tpl.html
index 6c0ab90..f972b78 100644
--- a/ui/src/app/extension/extensions-forms/extension-form-mqtt.tpl.html
+++ b/ui/src/app/extension/extensions-forms/extension-form-mqtt.tpl.html
@@ -241,14 +241,14 @@
</md-input-container>
<md-input-container ng-if="map.converter.typeExp == 'deviceTypeJsonExpression'" flex="60" class="md-block" md-is-error="theForm['mqttJsonTypeExp_' + brokerIndex + mapIndex].$touched && theForm['mqttJsonTypeExp_' + brokerIndex + mapIndex].$invalid">
<label translate>extension.json-type-expression</label>
- <input required name="mqttJsonTypeExp_{{brokerIndex}}{{mapIndex}}" ng-model="map.converter.deviceTypeJsonExpression">
+ <input name="mqttJsonTypeExp_{{brokerIndex}}{{mapIndex}}" ng-model="map.converter.deviceTypeJsonExpression">
<div ng-messages="theForm['mqttJsonTypeExp_' + brokerIndex + mapIndex].$error">
<div translate ng-message="required">extension.field-required</div>
</div>
</md-input-container>
<md-input-container ng-if="map.converter.typeExp == 'deviceTypeTopicExpression'" flex="60" class="md-block" md-is-error="theForm['mqttTopicTypeExp_' + brokerIndex + mapIndex].$touched && theForm['mqttTopicTypeExp_' + brokerIndex + mapIndex].$invalid">
<label translate>extension.topic-type-expression</label>
- <input required name="mqttTopicTypeExp_{{brokerIndex}}{{mapIndex}}" ng-model="map.converter.deviceTypeTopicExpression">
+ <input name="mqttTopicTypeExp_{{brokerIndex}}{{mapIndex}}" ng-model="map.converter.deviceTypeTopicExpression">
<div ng-messages="theForm['mqttTopicTypeExp_' + brokerIndex + mapIndex].$error">
<div translate ng-message="required">extension.field-required</div>
</div>
