diff --git a/src/enums/MDNodaRepository.php b/src/enums/MDNodaRepository.php
index 32a93ab..d558646 100644
--- a/src/enums/MDNodaRepository.php
+++ b/src/enums/MDNodaRepository.php
@@ -438,6 +438,11 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
             $id = strtr($id, $toRemove);
         }
 
+        // Handle extended IDs (like "4114170-2 (Fenster (Motiv)")
+        if (str_contains($id, '(')) {
+            $id = trim(explode('(', $id)[0]);
+        }
+
         // There is an issue with this regex
         if (preg_match("/^[0-9-X]*$/", $id) === false) {
             return false;
diff --git a/tests/MDNodaRepositoryTest.php b/tests/MDNodaRepositoryTest.php
index 5a72446..54489f2 100644
--- a/tests/MDNodaRepositoryTest.php
+++ b/tests/MDNodaRepositoryTest.php
@@ -36,6 +36,8 @@ final class MDNodaRepositoryTest extends TestCase {
         self::assertEquals("1037602218", MDNodaRepository::gnd->validateId("https://explore.gnd.network/gnd/1037602218"));
         self::assertEquals("102423008", MDNodaRepository::gnd->validateId("102423008"));
         self::assertEquals("102423008", MDNodaRepository::gnd->validateId("102423008,"));
+        self::assertEquals("4114170-2", MDNodaRepository::gnd->validateId("4114170-2"));
+        self::assertEquals("4114170-2", MDNodaRepository::gnd->validateId("4114170-2 (Fenster (Motiv)"));
         self::assertEquals(false, MDNodaRepository::gnd->validateId("fkld;s102423008"));
 
         // NDL (Japan)