diff --git a/config/qa.env b/config/qa.env
index f7cfb2f4..a802f3f5 100644
--- a/config/qa.env
+++ b/config/qa.env
@@ -1,6 +1,6 @@
 ENCRYPTED_ELASTICSEARCH_URI=AQECAHh7ea2tyZ6phZgT4B9BDKwguhlFtRC6hgt+7HbmeFsrsgAAAJYwgZMGCSqGSIb3DQEHBqCBhTCBggIBADB9BgkqhkiG9w0BBwEwHgYJYIZIAWUDBAEuMBEEDMIkDoQ9C/cCDCAq1wIBEIBQ+L3OgUGeOW9rs1CWkhpBjwM4LbbVRFIWedqew4UXIeSNMJ8cO9SNe4YGCUIoKwCDYt7W7ip3VtDRRRMVvz6QJw+Eg8ugTMVs2pbNFGNvaAQ=
 RESOURCES_INDEX=resources-2025-07-07
-SUBJECTS_INDEX=browse-qa-2025-10-27
+SUBJECTS_INDEX=browse-qa-2026-01-15
 ENCRYPTED_ELASTICSEARCH_API_KEY=AQECAHh7ea2tyZ6phZgT4B9BDKwguhlFtRC6hgt+7HbmeFsrsgAAAJ4wgZsGCSqGSIb3DQEHBqCBjTCBigIBADCBhAYJKoZIhvcNAQcBMB4GCWCGSAFlAwQBLjARBAx+kryf2KUmGdBYD9sCARCAV3ygz3eXIdq8JX/wpG9JRWlTNMRcpNE1qT0zNlN4t+ZvXEoedLQa/3p1YjgHw06GIAdA9xtkMV4eH9a1K8uCvjP8XxxNKekcMj59TlResnu9QF3r7pGXuQ==
 
 ENCRYPTED_SCSB_URL=AQECAHh7ea2tyZ6phZgT4B9BDKwguhlFtRC6hgt+7HbmeFsrsgAAAH8wfQYJKoZIhvcNAQcGoHAwbgIBADBpBgkqhkiG9w0BBwEwHgYJYIZIAWUDBAEuMBEEDBKllElmWYLxGOGopQIBEIA8JJyKde/8m8iCJGKR5D8HoTJhXHeyvw9eIDeuUNKiXLfJwoVz+PDAZSxkCQtM9O91zGhXbe3l6Bk1RlYJ
diff --git a/lib/elasticsearch/elastic-query-subjects-builder.js b/lib/elasticsearch/elastic-query-subjects-builder.js
index 78c685f7..1a3b8fe6 100644
--- a/lib/elasticsearch/elastic-query-subjects-builder.js
+++ b/lib/elasticsearch/elastic-query-subjects-builder.js
@@ -53,7 +53,6 @@ class ElasticQuerySubjectsBuilder {
       bool: {
         should: [
           { match: { preferredTerm: { query: this.request.querySansQuotes(), operator: 'and', _name: 'preferredTerm' } } },
-          { prefix: { preferredTerm: { value: this.request.querySansQuotes(), _name: 'preferredTermPrefix' } } },
           { nested: { path: 'variants', query: { match: { 'variants.variant': { query: this.request.querySansQuotes(), operator: 'and' } } }, inner_hits: {} } }
         ]
       }
diff --git a/lib/subjects.js b/lib/subjects.js
index 19e27817..5a5e533b 100644
--- a/lib/subjects.js
+++ b/lib/subjects.js
@@ -65,7 +65,7 @@ module.exports = function (app, _private = null) {
                 uri: hit._source.uri
               }
             } else {
-              // Match was on a variant- use that in the response.
+              // Match was on a variant- use that in the response
               const matchedVariantTerm = hit.inner_hits.variants.hits.hits[0]._source.variant
 
               return {
diff --git a/test/elastic-query-subjects-builder.test.js b/test/elastic-query-subjects-builder.test.js
index 889a5fb0..a50f7539 100644
--- a/test/elastic-query-subjects-builder.test.js
+++ b/test/elastic-query-subjects-builder.test.js
@@ -38,37 +38,31 @@ describe('ElasticQuerySubjectsBuilder', () => {
 
   describe('search_scope="has"', () => {
     it('applies subject match clauses to query', () => {
-      const request = new ApiRequest({ q: 'toast', search_scope: 'has' })
+      const request = new ApiRequest({ q: 'toast bread', search_scope: 'has' })
       const inst = ElasticQuerySubjectsBuilder.forApiRequest(request)
 
       const query = inst.query.toJson()
 
-      expect(query.bool.must[0].bool.should.length).to.equal(3)
+      expect(query.bool.must[0].bool.should.length).to.equal(2)
       expect(query.bool.must[0].bool.should[0])
       expect(query.bool.must[0].bool.should[0]).to.deep.equal({
         match: {
           preferredTerm: {
             _name: 'preferredTerm',
-            query: 'toast',
+            query: 'toast bread',
             operator: 'and'
           }
         }
       })
 
       expect(query.bool.must[0].bool.should[1]).to.deep.equal({
-        prefix: {
-          preferredTerm: { value: 'toast', _name: 'preferredTermPrefix' }
-        }
-      })
-
-      expect(query.bool.must[0].bool.should[2]).to.deep.equal({
         nested: {
           inner_hits: {},
           path: 'variants',
           query: {
             match: {
               'variants.variant': {
-                query: 'toast',
+                query: 'toast bread',
                 operator: 'and'
               }
             }