diff --git a/app/models/bank_transaction.rb b/app/models/bank_transaction.rb
index f53a286ba..69cf6fc2a 100644
--- a/app/models/bank_transaction.rb
+++ b/app/models/bank_transaction.rb
@@ -121,6 +121,7 @@ class BankTransaction < ApplicationRecord
   end
 
   def ref_number_from_description
-    /(\d{7})/.match(description)[0]
+    match_data = /(\d{7})/.match(description)
+    match_data[0] if match_data.present?
   end
 end
diff --git a/test/models/bank_transaction_test.rb b/test/models/bank_transaction_test.rb
index b8b0f65f7..944b47573 100644
--- a/test/models/bank_transaction_test.rb
+++ b/test/models/bank_transaction_test.rb
@@ -26,14 +26,12 @@ class BankTransactionTest < ActiveSupport::TestCase
     another_item.save
     another_invoice.reload
 
-    first_transaction = BankTransaction.new(description: 'invoice #2221',
-                                            sum: 10,
+    first_transaction = BankTransaction.new(sum: 10,
                                             description: 'Order nr 1 from registrar 1234567 second number 2345678')
 
     first_transaction.create_activity(another_invoice.buyer, another_invoice)
 
-    transaction = BankTransaction.new(description: 'invoice #2222',
-                                      sum: 10,
+    transaction = BankTransaction.new(sum: 10,
                                       description: 'Order nr 1 from registrar 1234567 second number 2345678')
 
     assert_difference 'AccountActivity.count' do
@@ -54,8 +52,7 @@ class BankTransactionTest < ActiveSupport::TestCase
     another_invoice.reload
     another_invoice.update(reference_no: '1234567', number: '2221', cancelled_at: Time.zone.now)
 
-    transaction = BankTransaction.new(description: 'invoice #2222',
-                                      sum: 10,
+    transaction = BankTransaction.new(sum: 10,
                                       description: 'Order nr 1 from registrar 1234567 second number 2345678')
 
     assert_difference 'AccountActivity.count' do
@@ -74,8 +71,7 @@ class BankTransactionTest < ActiveSupport::TestCase
     another_item.save
     another_invoice.reload
 
-    transaction = BankTransaction.new(description: 'invoice #2222',
-                                      sum: 10,
+    transaction = BankTransaction.new(sum: 10,
                                       description: 'Order nr 1 from registrar 1234567 second number 2345678')
 
     assert_difference 'AccountActivity.count' do
@@ -90,8 +86,7 @@ class BankTransactionTest < ActiveSupport::TestCase
 
   def test_matches_against_invoice_nubmber_and_reference_number_in_description
     create_payable_invoice(number: '2222', total: 10, reference_no: '1234567')
-    transaction = BankTransaction.new(description: 'invoice #2222',
-                                      sum: 10,
+    transaction = BankTransaction.new(sum: 10,
                                       description: 'Order nr 1 from registrar 1234567 second number 2345678')
 
     assert_difference 'AccountActivity.count' do
@@ -99,6 +94,18 @@ class BankTransactionTest < ActiveSupport::TestCase
     end
   end
 
+  def test_no_errors_if_no_valid_refnumber_in_description
+    create_payable_invoice(number: '2222', total: 10, reference_no: '1234567')
+    transaction = BankTransaction.new(sum: 10,
+                                      description: 'Order nr 1 from registrar 123456')
+
+    assert_no_difference 'AccountActivity.count' do
+      assert_nothing_raised do
+        transaction.autobind_invoice
+      end
+    end
+  end
+
   def test_resets_pending_registrar_balance_reload
     registrar = registrar_with_pending_balance_auto_reload
     create_payable_invoice(number: '2222', total: 10, reference_no: '1111')