diff --git a/src/utils/mrz.ts b/src/utils/mrz.ts
index e4207296..6392c0c9 100644
--- a/src/utils/mrz.ts
+++ b/src/utils/mrz.ts
@@ -5,7 +5,10 @@ type MRZ = {
   zone: string[];
 };
 
-type Field = { field: string; format?: (value: string) => string };
+type Field = {
+  field: string;
+  format?: (value: string, obj?: Record<string, string>) => string;
+};
 type FieldList = Record<string, Field>;
 
 const DEFAULT_FIELD = {
@@ -15,30 +18,30 @@ const DEFAULT_FIELD = {
   documentNoCheck: { field: 'doc_number_check' },
   name: {
     field: 'full_name',
-    format: (value: string) => value.replace(/0/, 'O'),
+    format: (value, _) => value.replace(/0/, 'O'),
   },
   country: {
     field: 'country',
-    format: (value: string) => value.replace(/0/, 'O'),
+    format: (value, _) => value.replace(/0/, 'O'),
   },
   nationality: {
     field: 'country',
-    format: (value: string) => value.replace(/0/, 'O'),
+    format: (value, _) => value.replace(/0/, 'O'),
   },
   gender: { field: 'sex' },
   birthDate: {
     field: 'birth_date',
-    format: (value: string) => moment(value, 'YYMMDD').format('YYYY-MM-DD'),
+    format: (value, _) => moment(value, 'YYMMDD').format('YYYY-MM-DD'),
   },
   birthDateCheck: { field: 'birth_date_check' },
   expireDate: {
     field: 'expire_date',
-    format: (value: string) => moment(value, 'YYMMDD').format('YYYY-MM-DD'),
+    format: (value, _) => moment(value, 'YYMMDD').format('YYYY-MM-DD'),
   },
   expireDateCheck: { field: 'expire_date_check' },
   optionalData: {
     field: 'optional_data',
-    format: (value: string) => moment(value, 'YYMMDD').format('YYYY-MM-DD'),
+    format: (value, _) => moment(value, 'YYMMDD').format('YYYY-MM-DD'),
   },
   optionalDataCheck: { field: 'optional_data_check' },
   lineCheck: { field: 'line_check' },
@@ -132,7 +135,7 @@ function mrzCleanResult(obj: Record<string, string>) {
 
   for (const value of Object.values(DEFAULT_FIELD)) {
     if (obj[value.field] && 'format' in value) {
-      obj[value.field] = value.format(obj[value.field]);
+      obj[value.field] = value.format(obj[value.field], obj);
     }
   }