1 files changed, 2 insertions, 2 deletions

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 1cbecaf029fa..876a4b981be8 100644
--- a/tools/perf/builtin-diff.c
+++ b/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;
         }