diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95285bd1..22ac94dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Denmark (DNK) postal code rules.
+
 ## [4.25.4] - 2024-10-02
 
 ### Added
diff --git a/react/country/DNK.js b/react/country/DNK.js
index 404d23b2..26be9dd4 100644
--- a/react/country/DNK.js
+++ b/react/country/DNK.js
@@ -14,8 +14,10 @@ export default {
     },
     {
       name: 'postalCode',
-      maxLength: 50,
-      label: 'postalCode',
+      maxLength: 4,
+      label: 'Postnumre',
+      mask: '1234',
+      regex: '^\\d{4}$',
       required: true,
       size: 'small',
       autoComplete: 'nope',