diff --git a/lib/vat_check/requests.rb b/lib/vat_check/requests.rb
index 95edd8b..f54598a 100644
--- a/lib/vat_check/requests.rb
+++ b/lib/vat_check/requests.rb
@@ -6,7 +6,7 @@ def self.lookup(vat)
       client = Savon.client(wsdl: 'https://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl', follow_redirects: true, log: false, log_level: :debug, pretty_print_xml: false)
       country_code, vat_number = VatCheck::Utility.split(vat)
       begin
-        response = client.call(:check_vat, message: {country_code: country_code, vat_number: vat_number}, message_tag: :checkVat)
+        response = client.call(:check_vat, message: {country_code: country_code, vat_number: vat_number}, message_tag: :checkVat, soap_action: nil)
         response.to_hash[:check_vat_response].reject { |key| key == :@xmlns }
       rescue Savon::SOAPFault => e
         if !!(e.message =~ /MS_UNAVAILABLE/)