diff --git a/includes/export/abstract-wc-csv-batch-exporter.php b/includes/export/abstract-wc-csv-batch-exporter.php
index 44e03564ca5..04b0f8038e9 100644
--- a/includes/export/abstract-wc-csv-batch-exporter.php
+++ b/includes/export/abstract-wc-csv-batch-exporter.php
@@ -101,7 +101,7 @@ abstract class WC_CSV_Batch_Exporter extends WC_CSV_Exporter {
 
 		// Add columns when finished.
 		if ( 100 === $this->get_percent_complete() ) {
-			$file = $this->export_column_headers() . $file;
+			$file = chr( 239 ) . chr( 187 ) . chr( 191 ) . $this->export_column_headers() . $file;
 		}
 
 		$file .= $data;
diff --git a/includes/export/abstract-wc-csv-exporter.php b/includes/export/abstract-wc-csv-exporter.php
index f35dd8d6809..978df5e2273 100644
--- a/includes/export/abstract-wc-csv-exporter.php
+++ b/includes/export/abstract-wc-csv-exporter.php
@@ -147,7 +147,7 @@ abstract class WC_CSV_Exporter {
 	public function export() {
 		$this->prepare_data_to_export();
 		$this->send_headers();
-		$this->send_content( $this->export_column_headers() . $this->get_csv_data() );
+		$this->send_content( chr( 239 ) . chr( 187 ) . chr( 191 ) . $this->export_column_headers() . $this->get_csv_data() );
 		die();
 	}