diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index dd9c064..b4db513 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -269,7 +269,7 @@
 		return -1;
 	}
 
-	if (al.filtered || al.sym == NULL)
+	if (al.filtered)
 		return 0;
 
 	if (hists__add_entry(&evsel->hists, &al, sample->period)) {