diff --git a/addons/barcodes/static/src/js/barcode_parser.js b/addons/barcodes/static/src/js/barcode_parser.js
index 1f804a40fea..0a356661cf6 100644
--- a/addons/barcodes/static/src/js/barcode_parser.js
+++ b/addons/barcodes/static/src/js/barcode_parser.js
@@ -102,7 +102,7 @@ var BarcodeParser = Class.extend({
         ean = ean.substr(0,13);
 
         for(var n = 0, count = (13 - ean.length); n < count; n++){
-            ean = ean + '0';
+            ean = '0' + ean;
         }
         return ean.substr(0,12) + this.ean_checksum(ean);
     },
diff --git a/addons/stock/tests/test_stock_flow.py b/addons/stock/tests/test_stock_flow.py
index 2f980b8214d..237329be363 100644
--- a/addons/stock/tests/test_stock_flow.py
+++ b/addons/stock/tests/test_stock_flow.py
@@ -1534,7 +1534,6 @@ class TestStockFlow(TestStockCommon):
             'picking_id': picking_out.id,
             'location_id': self.stock_location,
             'location_dest_id': self.customer_location})
-
         # validate this delivery order, it should be in the waiting state
         picking_out.action_assign()
         self.assertEquals(picking_out.state, "confirmed")
diff --git a/requirements.txt b/requirements.txt
index 15d7d110289..7fd99eba68c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ ofxparse==0.14
 passlib==1.6.2
 psutil==2.2.0
 psycogreen==1.0
-psycopg2==2.5.4
+psycopg2==2.7.1
 pyPdf==1.13
 pydot==1.0.2
 pyparsing==2.0.3