diff --git a/tools/perf/util/data-convert-json.c b/tools/perf/util/data-convert-json.c
index 40412c3dbdb2..40888b7c4467 100644
--- a/tools/perf/util/data-convert-json.c
+++ b/tools/perf/util/data-convert-json.c
@@ -258,6 +258,7 @@ static int process_sample_event(const struct perf_tool *tool,
 				trace_seq_init(&s);
 				tep_print_field(&s, sample->raw_data, fields[i]);
 				output_json_key_string(out, true, 3, fields[i]->name, s.buffer);
+				trace_seq_destroy(&s);
 
 				i++;
 			}