diff --git a/src/MDConcLicenses.php b/src/MDConcLicenses.php
index ee09a40..659d519 100644
--- a/src/MDConcLicenses.php
+++ b/src/MDConcLicenses.php
@@ -38,6 +38,7 @@ final class MDConcLicenses {
         "CC_BY_NC_SA" => "CC BY-NC-SA",
         "CC-BY-NC-SA" => "CC BY-NC-SA",
         "CC.BY-NC-SA" => "CC BY-NC-SA",
+        "CC BY-NC-SA 3.0 AT" => "CC BY-NC-SA",
         "Namensnennung - Nicht kommerziell - Weitergabe unter gleichen Bedingungen 4.0 International (CC BY-NC-SA 4.0)" => "CC BY-NC-SA",
 
         "CC BY_NC_ND" => "CC BY-NC-ND",