diff --git a/spec/web/authorize_spec.rb b/spec/web/authorize_spec.rb
index 93737a3..6ec496a 100644
--- a/spec/web/authorize_spec.rb
+++ b/spec/web/authorize_spec.rb
@@ -77,8 +77,14 @@
       end
     end
 
-    it "should generate valid form field string" do
-      expect(@view.datatrans_notification_request_hidden_fields(@datatrans, @transaction)).to eq "<input type=\"hidden\" name=\"merchantId\" id=\"merchantId\" value=\"1100000000\" /><input type=\"hidden\" name=\"hiddenMode\" id=\"hiddenMode\" value=\"yes\" /><input type=\"hidden\" name=\"reqtype\" id=\"reqtype\" value=\"NOA\" /><input type=\"hidden\" name=\"amount\" id=\"amount\" value=\"1000\" /><input type=\"hidden\" name=\"currency\" id=\"currency\" value=\"CHF\" /><input type=\"hidden\" name=\"useAlias\" id=\"useAlias\" value=\"yes\" /><input type=\"hidden\" name=\"sign\" id=\"sign\" value=\"0402fb3fba8c6fcb40df9b7756e7e637\" /><input type=\"hidden\" name=\"refno\" id=\"refno\" value=\"ABCDEF\" /><input type=\"hidden\" name=\"uppCustomerDetails\" id=\"uppCustomerDetails\" /><input type=\"hidden\" name=\"uppCustomerEmail\" id=\"uppCustomerEmail\" value=\"customer@email.com\" />"
+    it 'should generate valid form field string' do
+      if Gem.loaded_specs['activesupport'].version >= Gem::Version.create('7.0')
+        expected_output = '<input type="hidden" name="merchantId" id="merchantId" value="1100000000" autocomplete="off" /><input type="hidden" name="hiddenMode" id="hiddenMode" value="yes" autocomplete="off" /><input type="hidden" name="reqtype" id="reqtype" value="NOA" autocomplete="off" /><input type="hidden" name="amount" id="amount" value="1000" autocomplete="off" /><input type="hidden" name="currency" id="currency" value="CHF" autocomplete="off" /><input type="hidden" name="useAlias" id="useAlias" value="yes" autocomplete="off" /><input type="hidden" name="sign" id="sign" value="0402fb3fba8c6fcb40df9b7756e7e637" autocomplete="off" /><input type="hidden" name="refno" id="refno" value="ABCDEF" autocomplete="off" /><input type="hidden" name="uppCustomerDetails" id="uppCustomerDetails" autocomplete="off" /><input type="hidden" name="uppCustomerEmail" id="uppCustomerEmail" value="customer@email.com" autocomplete="off" />'
+      else
+        expected_output = '<input type="hidden" name="merchantId" id="merchantId" value="1100000000" /><input type="hidden" name="hiddenMode" id="hiddenMode" value="yes" /><input type="hidden" name="reqtype" id="reqtype" value="NOA" /><input type="hidden" name="amount" id="amount" value="1000" /><input type="hidden" name="currency" id="currency" value="CHF" /><input type="hidden" name="useAlias" id="useAlias" value="yes" /><input type="hidden" name="sign" id="sign" value="0402fb3fba8c6fcb40df9b7756e7e637" /><input type="hidden" name="refno" id="refno" value="ABCDEF" /><input type="hidden" name="uppCustomerDetails" id="uppCustomerDetails" /><input type="hidden" name="uppCustomerEmail" id="uppCustomerEmail" value="customer@email.com" />'
+      end
+
+      expect(@view.datatrans_notification_request_hidden_fields(@datatrans, @transaction)).to eq expected_output
     end
   end