diff --git a/manifest.yaml b/manifest.yaml
index 2fe2a68..263abb3 100644
--- a/manifest.yaml
+++ b/manifest.yaml
@@ -18,7 +18,7 @@ dublin_core:
     - 'vi/tw'
     - 'vi/tq'
     - 'vi/tn'
-    - 'vi/ulb'
+    - 'vi/udb'
   rights: 'CC BY-SA 4.0'
   source:
     -