1 files changed, 2 insertions, 1 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 0bb830f6b49c..61c54213704b 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2327,7 +2327,8 @@ int perf_session__write_header(struct perf_session *session,
                 }
         }
 
-        header->data_offset = lseek(fd, 0, SEEK_CUR);
+        if (!header->data_offset)
+                header->data_offset = lseek(fd, 0, SEEK_CUR);
         header->feat_offset = header->data_offset + header->data_size;
 
         if (at_exit) {