1 files changed, 1 insertions, 0 deletions

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 6b7d91160ecb..e8219990f8b8 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -32,6 +32,7 @@ static int hists__add_entry(struct hists *self,
 
 static int diff__process_sample_event(union perf_event *event,
                                       struct perf_sample *sample,
+                                      struct perf_evsel *evsel __used,
                                       struct perf_session *session)
 {
         struct addr_location al;