diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index c246f029062317ef55ccd979be953078e9279924..680632d7e26a1a372e8e918d92947cf8726ad166 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -511,7 +511,7 @@ typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
 				  const char *backtrace);
 
 static int process_sample_event(struct perf_tool *tool __maybe_unused,
-				union perf_event *event __maybe_unused,
+				union perf_event *event,
 				struct perf_sample *sample,
 				struct perf_evsel *evsel,
 				struct machine *machine __maybe_unused)