diff --git a/src/utils/mrz.ts b/src/utils/mrz.ts
index 6392c0c9..3a0faaa5 100644
--- a/src/utils/mrz.ts
+++ b/src/utils/mrz.ts
@@ -13,7 +13,6 @@ type FieldList = Record<string, Field>;
 
 const DEFAULT_FIELD = {
   documentType: { field: 'doc_type' },
-  documentSubType: { field: 'doc_subtype' },
   documentNo: { field: 'doc_number' },
   documentNoCheck: { field: 'doc_number_check' },
   name: {
@@ -50,8 +49,7 @@ const DEFAULT_FIELD = {
 const MRZ_TD_1 = [
   new RegExp(
     [
-      `(?<${DEFAULT_FIELD.documentType.field}>[0-9A-Z<]{1})`,
-      `(?<${DEFAULT_FIELD.documentSubType.field}>[A-Z<]{1})`,
+      `(?<${DEFAULT_FIELD.documentType.field}>[0-9A-Z<]{2})`,
       `(?<${DEFAULT_FIELD.country.field}>[0-9A-Z<]{3})`,
       `(?<${DEFAULT_FIELD.documentNo.field}>[0-9A-Z<]{9})`,
       `(?<${DEFAULT_FIELD.documentNoCheck.field}>[0-9A-Z<]{1})`,
@@ -75,8 +73,7 @@ const MRZ_TD_1 = [
 const MRZ_TD_2 = [
   new RegExp(
     [
-      `(?<${DEFAULT_FIELD.documentType.field}>[0-9A-Z<]{1})`,
-      `(?<${DEFAULT_FIELD.documentSubType.field}>[A-Z<]{1})`,
+      `(?<${DEFAULT_FIELD.documentType.field}>[0-9A-Z<]{2})`,
       `(?<${DEFAULT_FIELD.country.field}>[0-9A-Z<]{3})`,
       `(?<${DEFAULT_FIELD.name.field}>[A-Z<]{31})`,
     ].join(''),
@@ -101,8 +98,7 @@ const MRZ_TD_2 = [
 const MRZ_TD_3 = [
   new RegExp(
     [
-      `(?<${DEFAULT_FIELD.documentType.field}>[A-Z0-9<]{1})`,
-      `(?<${DEFAULT_FIELD.documentSubType.field}>[A-Z0-9<]{1})`,
+      `(?<${DEFAULT_FIELD.documentType.field}>[A-Z0-9<]{2})`,
       `(?<${DEFAULT_FIELD.country.field}>[0-9A-Z<]{3})`,
       `(?<${DEFAULT_FIELD.name.field}>[A-Z0-9<]{39})`,
     ].join(''),