diff --git a/src/enums/MDNodaRepository.php b/src/enums/MDNodaRepository.php
index e3341eb..008f245 100644
--- a/src/enums/MDNodaRepository.php
+++ b/src/enums/MDNodaRepository.php
@@ -73,6 +73,8 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
             'https://explore.gnd.network/gnd/' => self::gnd,
             'grobsystematik' => self::grobsystematik,
             'iconclass' => self::iconclass,
+            'Iconclass' => self::iconclass,
+            'http://iconclass.org' => self::iconclass,
             'klbb'      => self::klbb,
             'kl-bb'      => self::klbb,
             'lcsh'      => self::lcsh,