1 files changed, 1 insertions, 0 deletions

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 5d2fd52fe7b5..fa9d652c2dc3 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -166,6 +166,7 @@ void perf_session__delete(struct perf_session *self)
 
 void perf_session__remove_thread(struct perf_session *self, struct thread *th)
 {
+        self->last_match = NULL;
         rb_erase(&th->rb_node, &self->threads);
         /*
          * We may have references to this thread, for instance in some hist_entry