diff --git a/[refs] b/[refs]
index 74f662f1b26f..beff406fe11e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 71289be7630fb97f2de6bb2e18a50289dc869f9d
+refs/heads/master: cdbae31408cf39372402076cf2e189ec693daa71
diff --git a/trunk/tools/perf/builtin-diff.c b/trunk/tools/perf/builtin-diff.c
index 1cbecaf029fa..876a4b981be8 100644
--- a/trunk/tools/perf/builtin-diff.c
+++ b/trunk/tools/perf/builtin-diff.c
@@ -51,12 +51,12 @@ static int diff__process_sample_event(event_t *event, struct perf_session *sessi
 		return -1;
 	}
 
-	if (al.filtered)
+	if (al.filtered || al.sym == NULL)
 		return 0;
 
 	event__parse_sample(event, session->sample_type, &data);
 
-	if (al.sym && perf_session__add_hist_entry(session, &al, data.period)) {
+	if (perf_session__add_hist_entry(session, &al, data.period)) {
 		pr_warning("problem incrementing symbol count, skipping event\n");
 		return -1;
 	}