diff --git a/util/headerreader/header_reader.go b/util/headerreader/header_reader.go
index befd54ace3..ab61f8a2ee 100644
--- a/util/headerreader/header_reader.go
+++ b/util/headerreader/header_reader.go
@@ -314,7 +314,7 @@ func (s *HeaderReader) logIfHeaderIsOld() {
 	headerTime := time.Since(l1Timetamp)
 	if headerTime >= s.config().OldHeaderTimeout {
 		s.setError(fmt.Errorf("latest header is at least %v old", headerTime))
-		log.Warn(
+		log.Error(
 			"latest L1 block is old", "l1Block", storedHeader.Number,
 			"l1Timestamp", l1Timetamp, "age", headerTime,
 		)