diff --git a/ui/src/components/SchemaForm/index.tsx b/ui/src/components/SchemaForm/index.tsx
index 0dc5e209..c57ca5b2 100644
--- a/ui/src/components/SchemaForm/index.tsx
+++ b/ui/src/components/SchemaForm/index.tsx
@@ -2,6 +2,7 @@ import {
   ForwardRefRenderFunction,
   forwardRef,
   useImperativeHandle,
+  useEffect,
 } from 'react';
 import { Form, Button, Stack } from 'react-bootstrap';
 import { useTranslation } from 'react-i18next';
@@ -155,16 +156,10 @@ const SchemaForm: ForwardRefRenderFunction<IRef, IProps> = (
    */
   const setDefaultValueAsDomBehaviour = () => {
     keys.forEach((k) => {
-      const formVal = formData[k]?.value;
+      const fieldVal = formData[k]?.value;
       const metaProp = properties[k];
       const uiCtrl = uiSchema[k]?.['ui:widget'];
-      if (
-        !metaProp ||
-        !uiCtrl ||
-        formVal ||
-        formVal === 0 ||
-        formVal === false
-      ) {
+      if (!metaProp || !uiCtrl || fieldVal !== undefined) {
         return;
       }
       if (uiCtrl === 'select' && metaProp.enum?.[0] !== undefined) {
@@ -176,7 +171,9 @@ const SchemaForm: ForwardRefRenderFunction<IRef, IProps> = (
       }
     });
   };
-  setDefaultValueAsDomBehaviour();
+  useEffect(() => {
+    setDefaultValueAsDomBehaviour();
+  }, [formData]);
 
   const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
     const { name, value } = e.target;
diff --git a/ui/src/pages/Admin/Smtp/index.tsx b/ui/src/pages/Admin/Smtp/index.tsx
index 3a625157..135862ae 100644
--- a/ui/src/pages/Admin/Smtp/index.tsx
+++ b/ui/src/pages/Admin/Smtp/index.tsx
@@ -33,7 +33,7 @@ const Smtp: FC = () => {
         description: t('smtp_host.text'),
       },
       encryption: {
-        type: 'boolean',
+        type: 'string',
         title: t('encryption.label'),
         description: t('encryption.text'),
         enum: ['SSL', ''],
@@ -179,7 +179,7 @@ const Smtp: FC = () => {
   }, [setting]);
 
   useEffect(() => {
-    if (formData.smtp_authentication.value === '') {
+    if (!/true|false/.test(formData.smtp_authentication.value)) {
       return;
     }
     if (formData.smtp_authentication.value) {