diff --git a/internal/workbenchruntime/service.go b/internal/workbenchruntime/service.go
index 06c2542e..892a8ca8 100644
--- a/internal/workbenchruntime/service.go
+++ b/internal/workbenchruntime/service.go
@@ -1247,8 +1247,8 @@ func (s *Server) querySummaryFacts(ctx context.Context, sessions []map[string]an
 	if len(sessionIDs) > 0 {
 		resultCount++
 		go func() {
-			messageFacts, err := s.queryFacts(ctx, factQuery{SessionIDs: sessionIDs, Families: []string{"messages"}, MessagesOrder: "updated_asc"})
-			results <- summaryFactsResult{kind: "messageFacts", facts: messageFacts, err: err}
+			messageSummaries, err := s.queryMessageSummaries(ctx, sessionIDs)
+			results <- summaryFactsResult{kind: "messageSummaries", facts: map[string][]any{"messageSummaries": messageSummaries}, err: err}
 		}()
 	}
 	if len(traceIDs) > 0 {
@@ -1264,7 +1264,7 @@ func (s *Server) querySummaryFacts(ctx context.Context, sessions []map[string]an
 			return nil, result.err
 		}
 		switch result.kind {
-		case "messageFacts":
+		case "messageSummaries":
 			facts = mergeFacts(facts, result.facts)
 		case "traceFacts":
 			facts = mergeFacts(facts, result.facts)