diff --git a/lib/active_merchant/billing/gateways/moneris.rb b/lib/active_merchant/billing/gateways/moneris.rb
index 2df428bb68c..2123115ccf7 100644
--- a/lib/active_merchant/billing/gateways/moneris.rb
+++ b/lib/active_merchant/billing/gateways/moneris.rb
@@ -218,7 +218,7 @@ def add_external_mpi_fields(post, options)
         three_d_secure_options = options[:three_d_secure]
 
         post[:threeds_version] = three_d_secure_options[:version]
-        post[:crypt_type] = three_d_secure_options[:eci]
+        post[:crypt_type] = three_d_secure_options.dig(:eci)&.to_s&.sub!(/^0/, '')
         post[:cavv] = three_d_secure_options[:cavv]
         post[:threeds_server_trans_id] = three_d_secure_options[:three_ds_server_trans_id]
         post[:ds_trans_id] = three_d_secure_options[:ds_transaction_id]
diff --git a/test/unit/gateways/moneris_test.rb b/test/unit/gateways/moneris_test.rb
index feefeace8c6..cd8e3da72ba 100644
--- a/test/unit/gateways/moneris_test.rb
+++ b/test/unit/gateways/moneris_test.rb
@@ -15,7 +15,7 @@ def setup
     @credit_card = credit_card('4242424242424242')
 
     # https://developer.moneris.com/livedemo/3ds2/reference/guide/php
-    @fully_authenticated_eci = 5
+    @fully_authenticated_eci = '02'
     @no_liability_shift_eci = 7
 
     @options = { order_id: '1', customer: '1', billing_address: address }
@@ -86,6 +86,7 @@ def test_failed_mpi_cavv_purchase
       assert_match(/<ds_trans_id>12345<\/ds_trans_id>/, data)
       assert_match(/<threeds_server_trans_id>d0f461f8-960f-40c9-a323-4e43a4e16aaa<\/threeds_server_trans_id>/, data)
       assert_match(/<threeds_version>2<\/threeds_version>/, data)
+      assert_match(/<crypt_type>2<\/crypt_type>/, data)
     end.respond_with(failed_cavv_purchase_response)
 
     assert_failure response