diff --git a/lib/cmxl/fields/account_identification.rb b/lib/cmxl/fields/account_identification.rb
index 617c686..e1f9794 100644
--- a/lib/cmxl/fields/account_identification.rb
+++ b/lib/cmxl/fields/account_identification.rb
@@ -2,7 +2,7 @@ module Cmxl
   module Fields
     class AccountIdentification < Field
       self.tag = 25
-      self.parser = /(?<bank_code>\w{8,11})\/(?<account_number>\d{0,23})(?<currency>[A-Z]{3})?|(?<country>[a-zA-Z]{2})(?<ban>\d{11,36})/i
+      self.parser = /(?<bank_code>\w{7,11})\/(?<account_number>\d{0,23})\/?(?<currency>[A-Z]{3})?|(?<country>[a-zA-Z]{2})(?<ban>\d{11,36})/i
 
       def iban
         "#{country}#{ban}"
diff --git a/spec/fields/account_identification_spec.rb b/spec/fields/account_identification_spec.rb
index 4210cdd..9b70363 100644
--- a/spec/fields/account_identification_spec.rb
+++ b/spec/fields/account_identification_spec.rb
@@ -10,6 +10,15 @@
     it { expect(subject.country).to be_nil }
   end
 
+  context 'legacy data with spillted iban' do
+    subject { Cmxl::Fields::AccountBalance.parse( fixture_line(:account_identification_short) ) }
+
+    it { expect(subject.bank_code).to eql('AT32000') }
+    it { expect(subject.account_number).to eql('4005287001') }
+    it { expect(subject.currency).to eql('EUR') }
+    it { expect(subject.country).to be_nil }
+  end
+
   context 'iban' do
     subject { Cmxl::Fields::AccountBalance.parse(fixture_line(:account_identification_iban)) }
     it { expect(subject.country).to eql('PL') }
diff --git a/spec/fixtures/lines/account_identification_short.txt b/spec/fixtures/lines/account_identification_short.txt
new file mode 100644
index 0000000..0af5e53
--- /dev/null
+++ b/spec/fixtures/lines/account_identification_short.txt
@@ -0,0 +1 @@
+:25:AT32000/4005287001/EUR