diff --git a/Armenian/MS_Armenian_11.xml b/Armenian/MS_Armenian_11.xml
index 0f5b8874..11f562cb 100644
--- a/Armenian/MS_Armenian_11.xml
+++ b/Armenian/MS_Armenian_11.xml
@@ -61,7 +61,7 @@
                         <repository>Wellcome Library</repository>
                         <idno type="shelfmark">MS Armenian 11</idno>
                         <altIdentifier type="Sierra">
-                            <idno><!-- Insert Sierra b number here --></idno>                                               
+                            <idno>b33204792</idno>                                               
                         </altIdentifier>
                         <altIdentifier type="accession">
                             <idno>18228</idno>