diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 7d07324db41c..2437fb0b463a 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -16,14 +16,6 @@
 #include "cpumap.h"
 #include "event-parse.h"
 
-int perf_session__synthesize_sample(struct perf_session *session,
-				    union perf_event *event,
-				    const struct perf_sample *sample)
-{
-	return perf_event__synthesize_sample(event, perf_evlist__sample_type(session->evlist),
-					     sample, session->header.needs_swap);
-}
-
 static int perf_session__open(struct perf_session *self, bool force)
 {
 	struct stat input_stat;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 7389fb1f010a..1f7ec87db7d7 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -126,10 +126,6 @@ size_t perf_session__fprintf_dsos_buildid(struct perf_session *self,
 
 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp);
 
-int perf_session__synthesize_sample(struct perf_session *session,
-				    union perf_event *event,
-				    const struct perf_sample *sample);
-
 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
 					    unsigned int type);