diff --git a/account.py b/account.py
index ad0071ebb4..1617196df5 100644
--- a/account.py
+++ b/account.py
@@ -31,8 +31,9 @@ class InvoiceLine(metaclass=PoolMeta):
         Uom = pool.get('product.uom')
         quantity = 0
         for stock_move in self.stock_moves:
-            quantity += Uom.compute_qty(stock_move.uom, stock_move.quantity,
-                self.unit)
+            if stock_move.state != 'cancel':
+                quantity += Uom.compute_qty(
+                    stock_move.uom, stock_move.quantity, self.unit)
         return quantity
 
     @classmethod
diff --git a/stock.py b/stock.py
index 918d0b4322..da29e8ecc8 100644
--- a/stock.py
+++ b/stock.py
@@ -17,8 +17,9 @@ class Move(metaclass=PoolMeta):
         Uom = pool.get('product.uom')
         quantity = 0
         for invoice_line in self.invoice_lines:
-            quantity += Uom.compute_qty(invoice_line.unit,
-                invoice_line.quantity, self.uom)
+            if invoice_line.invoice_state != 'cancel':
+                quantity += Uom.compute_qty(
+                    invoice_line.unit, invoice_line.quantity, self.uom)
         return quantity
 
     @classmethod