diff --git a/modules/os2forms_nemid/src/Element/NemidCprFetchData.php b/modules/os2forms_nemid/src/Element/NemidCprFetchData.php
index 5c20fbb8..8906b980 100644
--- a/modules/os2forms_nemid/src/Element/NemidCprFetchData.php
+++ b/modules/os2forms_nemid/src/Element/NemidCprFetchData.php
@@ -16,7 +16,7 @@ public static function getCompositeElements(array $element) {
     $elements = parent::getCompositeElements($element);
 
     // Pattern for CPR.
-    $elements[self::getValueElementName()]['#pattern'] = '\d{6}-\d{4}';
+    $elements[self::getValueElementName()]['#pattern'] = '\d{6}(-)?\d{4}';
 
     return $elements;
   }