diff --git a/app/models/event.rb b/app/models/event.rb
index 14efbbd8c..7d937bb07 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -246,7 +246,7 @@ def self.metrics_aggregations
         filter: {script: {script: "#{INCLUDED_RELATION_TYPES}.contains(doc['relation_type_id'].value)"}
         },
         aggs: { dois: {
-           terms: { field: 'doi', size: 50, min_doc_count: 1 }, aggs: { unique_citations: { cardinality: { field: 'citation_id' }}}
+           terms: { field: 'doi', size: 100, min_doc_count: 1 }, aggs: { unique_citations: { cardinality: { field: 'citation_id' }}}
         }}
       },
       views: {
diff --git a/spec/requests/events_spec.rb b/spec/requests/events_spec.rb
index 384a16b07..a903f0f82 100644
--- a/spec/requests/events_spec.rb
+++ b/spec/requests/events_spec.rb
@@ -656,7 +656,7 @@
     context "unique citations for a list of dois" do
       let!(:event) { create_list(:event_for_datacite_related, 50) }
       let!(:copies) { create(:event_for_datacite_related,  subj_id:"http://doi.org/10.0260/co.2004960.v1", relation_type_id: "cites") }
-      let(:dois) {"10.5061/dryad.47sd5e/2,10.5061/dryad.47sd5e/3,10.5061/dryad.47sd5e/4,10.0260/co.2004960.v1"}
+      let(:dois) { ((event.map{ |e| e['subj_id'].gsub("https://doi.org/","")})[1, 20]).join(",")}
       let(:uri) { "/events?aggregations=metrics_aggregations&dois=#{dois}" }
 
       before do
@@ -678,8 +678,7 @@
         total = response.dig("meta", "total")
 
         expect(total).to eq(51)
-        # TODO
-        # expect((citations.select { |doi| dois.split(",").include?(doi["id"]) }).length).to eq(4)
+        expect((citations.select { |doi| dois.split(",").include?(doi["id"]) }).length).to eq(20)
       end
     end