diff --git a/web/schemas/ID3A.json b/web/schemas/ID3A.json
index 85a6018..7d9a5fd 100644
--- a/web/schemas/ID3A.json
+++ b/web/schemas/ID3A.json
@@ -427,7 +427,6 @@
             "Pr",
             "Sn",            
             "blank2",
-            "Yb",
             "Other"
         ]
     },