diff --git a/cdc/sink/ddlsink/cloudstorage/cloud_storage_ddl_sink.go b/cdc/sink/ddlsink/cloudstorage/cloud_storage_ddl_sink.go
index 543cd0184b6..c4e8d84e01b 100644
--- a/cdc/sink/ddlsink/cloudstorage/cloud_storage_ddl_sink.go
+++ b/cdc/sink/ddlsink/cloudstorage/cloud_storage_ddl_sink.go
@@ -164,7 +164,7 @@ func (d *DDLSink) bgCleanup(ctx context.Context, cleanupJob func()) {
 			zap.String("namespace", d.id.Namespace),
 			zap.String("changefeedID", d.id.ID),
 			zap.String("date-separator", d.cfg.DateSeparator),
-			zap.Duration("expired-file-ttl", d.cfg.FileExpirationDays))
+			zap.Int("expired-file-ttl", d.cfg.FileExpirationDays))
 		return
 	}
 
@@ -176,7 +176,7 @@ func (d *DDLSink) bgCleanup(ctx context.Context, cleanupJob func()) {
 		zap.String("namespace", d.id.Namespace),
 		zap.String("changefeedID", d.id.ID),
 		zap.String("date-separator", d.cfg.DateSeparator),
-		zap.Duration("expired-file-ttl", d.cfg.FileExpirationDays))
+		zap.Int("expired-file-ttl", d.cfg.FileExpirationDays))
 
 	// wait for the context done
 	<-ctx.Done()