diff --git a/config/vufind/Summon.ini b/config/vufind/Summon.ini
index 862e8abf15ffc3bd13bf210d97fa0eebd03af63a..1de3b89731370c2efb0a938bb007f44c74e84e77 100644
--- a/config/vufind/Summon.ini
+++ b/config/vufind/Summon.ini
@@ -86,6 +86,7 @@ holdingsOnly:false = add_other_libraries
 [Facets]
 Library = Location
 ContentType = Format
+Discipline = "Subject Area"
 SubjectTerms = Topic
 Language = Language
 PublicationDate = "adv_search_year"  ; share year string w/advanced search page