diff --git a/account_bank_statement_import_txt_xlsx/models/account_bank_statement_import_sheet_parser.py b/account_bank_statement_import_txt_xlsx/models/account_bank_statement_import_sheet_parser.py
index a6c17995..58766adc 100644
--- a/account_bank_statement_import_txt_xlsx/models/account_bank_statement_import_sheet_parser.py
+++ b/account_bank_statement_import_txt_xlsx/models/account_bank_statement_import_sheet_parser.py
@@ -252,22 +252,26 @@ class AccountBankStatementImportSheetParser(models.TransientModel):
                 timestamp = datetime.strptime(timestamp, mapping.timestamp_format)
 
             amount = self._parse_decimal(amount, mapping)
-            if balance is not None:
+            if balance:
                 balance = self._parse_decimal(balance, mapping)
+            else:
+                balance = None
 
-            if debit_credit is not None:
+            if debit_credit:
                 amount = amount.copy_abs()
                 if debit_credit == mapping.debit_value:
                     amount = -amount
 
-            if original_currency is None:
+            if not original_currency:
                 original_currency = currency
                 original_amount = amount
             elif original_currency == currency:
                 original_amount = amount
 
-            if original_amount is not None:
-                original_amount = self._parse_decimal(original_amount, mapping)
+            if original_amount:
+                original_amount = self._parse_decimal(
+                    original_amount, mapping
+                ).copy_sign(amount)
             else:
                 original_amount = 0.0
 
diff --git a/account_bank_statement_import_txt_xlsx/tests/fixtures/original_currency.csv b/account_bank_statement_import_txt_xlsx/tests/fixtures/original_currency.csv
index e025cf08..04731cfc 100644
--- a/account_bank_statement_import_txt_xlsx/tests/fixtures/original_currency.csv
+++ b/account_bank_statement_import_txt_xlsx/tests/fixtures/original_currency.csv
@@ -1,2 +1,2 @@
 "Date","Label","Currency","Amount","Amount Currency","Partner Name","Bank Account"
-"12/15/2018","Your payment","EUR","1,525.00","1,000.00","Azure Interior",""
+"12/15/2018","Your payment","EUR","1,525.00","-1,000.00","Azure Interior",""
diff --git a/account_bank_statement_import_txt_xlsx/tests/fixtures/original_currency_empty.csv b/account_bank_statement_import_txt_xlsx/tests/fixtures/original_currency_empty.csv
new file mode 100644
index 00000000..6db95ba0
--- /dev/null
+++ b/account_bank_statement_import_txt_xlsx/tests/fixtures/original_currency_empty.csv
@@ -0,0 +1,2 @@
+"Date","Label","Currency","Amount","Amount Currency","Partner Name","Bank Account"
+"12/15/2018","Your payment",,"1,525.00",,"Azure Interior",""
diff --git a/account_bank_statement_import_txt_xlsx/tests/test_account_bank_statement_import_txt_xlsx.py b/account_bank_statement_import_txt_xlsx/tests/test_account_bank_statement_import_txt_xlsx.py
index 18ba203b..fe009b06 100644
--- a/account_bank_statement_import_txt_xlsx/tests/test_account_bank_statement_import_txt_xlsx.py
+++ b/account_bank_statement_import_txt_xlsx/tests/test_account_bank_statement_import_txt_xlsx.py
@@ -223,6 +223,41 @@ class TestAccountBankStatementImportTxtXlsx(common.TransactionCase):
         self.assertEqual(line.currency_id, self.currency_eur)
         self.assertEqual(line.amount_currency, 1000.0)
 
+    def test_original_currency_empty(self):
+        journal = self.AccountJournal.create(
+            {
+                "name": "Bank",
+                "type": "bank",
+                "code": "BANK",
+                "currency_id": self.currency_usd.id,
+            }
+        )
+        data = self._data_file("fixtures/original_currency_empty.csv", "utf-8")
+        wizard = self.AccountBankStatementImport.with_context(
+            journal_id=journal.id
+        ).create(
+            {
+                "attachment_ids": [
+                    (
+                        0,
+                        0,
+                        {"name": "fixtures/original_currency_empty.csv", "datas": data},
+                    )
+                ],
+                "sheet_mapping_id": self.sample_statement_map.id,
+            }
+        )
+        wizard.with_context(
+            account_bank_statement_import_txt_xlsx_test=True
+        ).import_file()
+        statement = self.AccountBankStatement.search([("journal_id", "=", journal.id)])
+        self.assertEqual(len(statement), 1)
+        self.assertEqual(len(statement.line_ids), 1)
+
+        line = statement.line_ids
+        self.assertFalse(line.currency_id)
+        self.assertEqual(line.amount_currency, 0.0)
+
     def test_multi_currency(self):
         journal = self.AccountJournal.create(
             {