diff --git a/lib/inferno/repositories/test_runs.rb b/lib/inferno/repositories/test_runs.rb
index 936918e0a..ec2cd506c 100644
--- a/lib/inferno/repositories/test_runs.rb
+++ b/lib/inferno/repositories/test_runs.rb
@@ -56,7 +56,7 @@ def last_test_run(test_session_id)
             .order(Sequel.desc(:updated_at))
             .limit(1)
             .to_a
-            .map { |record| record.to_json_data(json_serializer_options).deep_symbolize_keys! }
+            .map { |record| record.to_json_data.deep_symbolize_keys! }
             &.first
             &.to_hash