diff --git a/public/option/option.json b/public/option/option.json
index c5ea33cd..963c4ad2 100644
--- a/public/option/option.json
+++ b/public/option/option.json
@@ -183,15 +183,15 @@
 
     "prefix": [
       {
-        "label": "Mr",
+        "label": "MR",
         "value": "mr"
       },
       {
-        "label": "Mrs",
+        "label": "MRS",
         "value": "mrs"
       },
       {
-        "label": "Miss",
+        "label": "MISS",
         "value": "miss"
       }
     ],
diff --git a/src/i18n/tha.ts b/src/i18n/tha.ts
index 57eeb57d..ce4c02bb 100644
--- a/src/i18n/tha.ts
+++ b/src/i18n/tha.ts
@@ -496,9 +496,9 @@ export default {
       },
 
       prefix: {
-        mr: 'Mr.',
-        mrs: 'Mrs.',
-        miss: 'Miss.',
+        mr: 'MR.',
+        mrs: 'MRS.',
+        miss: 'MISS.',
       },
 
       citizenId: 'บัตรประจำตัวประชาชน',