diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index e99fb3b..93b852f 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -491,6 +491,8 @@
 
 	if (show_baseline_only)
 		hists__baseline_only(new);
+	else
+		hists__link(new, old);
 
 	if (sort_compute) {
 		hists__precompute(new);