diff --git a/writers/mixedbatchwriter/mixedbatchwriter.go b/writers/mixedbatchwriter/mixedbatchwriter.go
index 49fb529d87..cca2a8b542 100644
--- a/writers/mixedbatchwriter/mixedbatchwriter.go
+++ b/writers/mixedbatchwriter/mixedbatchwriter.go
@@ -192,7 +192,7 @@ func (m *batchManager[A, T]) flush(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
-	m.batch = m.batch[:0]
+	m.batch = nil
 	return nil
 }
 
@@ -229,7 +229,7 @@ func (m *insertBatchManager) flush(ctx context.Context) error {
 	}
 	m.logger.Debug().Int("len", batchSize).Dur("duration", time.Since(start)).Msg("batch written successfully")
 
-	m.batch = m.batch[:0]
+	m.batch = nil
 	m.curBatchSizeBytes = 0
 	return nil
 }