diff --git a/lib/active_merchant/billing/gateways/fat_zebra.rb b/lib/active_merchant/billing/gateways/fat_zebra.rb
index 0d534db434c..3a9f11b656f 100644
--- a/lib/active_merchant/billing/gateways/fat_zebra.rb
+++ b/lib/active_merchant/billing/gateways/fat_zebra.rb
@@ -151,7 +151,7 @@ def add_three_ds(post, options)
           par: three_d_secure[:authentication_response_status],
           ver: formatted_enrollment(three_d_secure[:enrolled]),
           threeds_version: three_d_secure[:version],
-          ds_transaction_id: three_d_secure[:ds_transaction_id]
+          directory_server_txn_id: three_d_secure[:ds_transaction_id]
         }.compact
       end
 
diff --git a/test/remote/gateways/remote_fat_zebra_test.rb b/test/remote/gateways/remote_fat_zebra_test.rb
index 17da0b1c94d..8e85b032369 100644
--- a/test/remote/gateways/remote_fat_zebra_test.rb
+++ b/test/remote/gateways/remote_fat_zebra_test.rb
@@ -233,7 +233,7 @@ def test_successful_purchase_with_3DS
       version: '2.0',
       cavv: '3q2+78r+ur7erb7vyv66vv\/\/\/\/8=',
       eci: '05',
-      ds_transaction_id: 'ODUzNTYzOTcwODU5NzY3Qw==',
+      ds_transaction_id: 'f25084f0-5b16-4c0a-ae5d-b24808a95e4b',
       enrolled: 'true',
       authentication_response_status: 'Y'
     }
diff --git a/test/unit/gateways/fat_zebra_test.rb b/test/unit/gateways/fat_zebra_test.rb
index 3caf94852dc..dfb33d78355 100644
--- a/test/unit/gateways/fat_zebra_test.rb
+++ b/test/unit/gateways/fat_zebra_test.rb
@@ -25,6 +25,7 @@ def setup
       eci: '05',
       xid: 'ODUzNTYzOTcwODU5NzY3Qw==',
       enrolled: 'true',
+      ds_transaction_id: 'f25084f0-5b16-4c0a-ae5d-b24808a95e4b',
       authentication_response_status: 'Y'
     }
   end
@@ -235,7 +236,7 @@ def test_three_ds_v2_object_construction
     assert_equal ds_options[:cavv], ds_data[:cavv]
     assert_equal ds_options[:eci], ds_data[:sli]
     assert_equal ds_options[:xid], ds_data[:xid]
-    assert_equal ds_options[:ds_transaction_id], ds_data[:ds_transaction_id]
+    assert_equal ds_options[:ds_transaction_id], ds_data[:directory_server_txn_id]
     assert_equal 'Y', ds_data[:ver]
     assert_equal ds_options[:authentication_response_status], ds_data[:par]
   end