diff --git a/app/controllers/dois_controller.rb b/app/controllers/dois_controller.rb
index 80042a937..fac859e7c 100644
--- a/app/controllers/dois_controller.rb
+++ b/app/controllers/dois_controller.rb
@@ -163,8 +163,8 @@ def index
         schema_versions = total.positive? ? facet_by_schema(response.aggregations.schema_versions.buckets) : nil
 
         affiliations = total.positive? ? facet_by_combined_key(response.aggregations.affiliations.buckets) : nil
-        sources = total.positive? ? facet_by_key(response.aggregations.sources.buckets) : nil
-        subjects = total.positive? ? facet_by_key(response.aggregations.subjects.buckets) : nil
+        # sources = total.positive? ? facet_by_key(response.aggregations.sources.buckets) : nil
+        # subjects = total.positive? ? facet_by_key(response.aggregations.subjects.buckets) : nil
         certificates = total.positive? ? facet_by_key(response.aggregations.certificates.buckets) : nil
 
         link_checks_status = total.positive? ? facet_by_cumulative_year(response.aggregations.link_checks_status.buckets) : nil
@@ -196,14 +196,14 @@ def index
               prefixes: prefixes,
               certificates: certificates,
               "schemaVersions" => schema_versions,
-              sources: sources,
+              # sources: sources,
               "linkChecksStatus" => link_checks_status,
               # "linksChecked" => links_checked,
               # "linksWithSchemaOrg" => links_with_schema_org,
               # "linkChecksSchemaOrgId" => link_checks_schema_org_id,
               # "linkChecksDcIdentifier" => link_checks_dc_identifier,
               # "linkChecksCitationDoi" => link_checks_citation_doi,
-              subjects: subjects,
+              # subjects: subjects,
               citations: citations,
               views: views,
               downloads: downloads,
diff --git a/app/models/doi.rb b/app/models/doi.rb
index e35175035..fc0a744d8 100644
--- a/app/models/doi.rb
+++ b/app/models/doi.rb
@@ -572,8 +572,8 @@ def self.query_aggregations
       # link_checks_dc_identifier: { value_count: { field: "landing_page.dcIdentifier" } },
       # link_checks_citation_doi: { value_count: { field: "landing_page.citationDoi" } },
       # links_checked: { value_count: { field: "landing_page.checked" } },
-      sources: { terms: { field: 'source', size: 15, min_doc_count: 1 } },
-      subjects: { terms: { field: 'subjects.subject', size: 15, min_doc_count: 1 } },
+      # sources: { terms: { field: 'source', size: 15, min_doc_count: 1 } },
+      # subjects: { terms: { field: 'subjects.subject', size: 15, min_doc_count: 1 } },
       certificates: { terms: { field: 'client.certificate', size: 15, min_doc_count: 1 } },
       views: {
         date_histogram: { field: 'publication_year', interval: 'year', format: 'year', order: { _key: "desc" }, min_doc_count: 1 },