diff --git a/addons/barcodes/static/src/js/barcode_parser.js b/addons/barcodes/static/src/js/barcode_parser.js
index e11b2fc7bcd..e31a51246b3 100644
--- a/addons/barcodes/static/src/js/barcode_parser.js
+++ b/addons/barcodes/static/src/js/barcode_parser.js
@@ -201,7 +201,7 @@ export class BarcodeParser {
             } else if (rule.encoding === 'upca' &&
                     this.check_encoding(barcode,'ean13') &&
                     barcode[0] === '0' &&
-                    this.upc_ean_conv in {'ean2upc':'','always':''} ){
+                    this.nomenclature.upc_ean_conv in {'ean2upc':'','always':''} ){
                 cur_barcode = cur_barcode.substr(1,12);
             }