diff --git a/lib/rock_rms/resources/refund.rb b/lib/rock_rms/resources/refund.rb
index b54afc1..343af32 100644
--- a/lib/rock_rms/resources/refund.rb
+++ b/lib/rock_rms/resources/refund.rb
@@ -20,6 +20,8 @@ def create_refund(
 
         transaction_amount = old_transaction[:details].map{|d| d[:amount]}.reduce(0.0){|sum,x| sum + x }
 
+        scheduled_transaction_id = old_transaction[:recurring_donation_id]
+
         refund_amount = amount || transaction_amount
 
         params = {
@@ -34,7 +36,8 @@ def create_refund(
             'TransactionDateTime' => date,
             'TransactionDetails'  => refunded_details(old_transaction[:details], transaction_amount, refund_amount),
             'TransactionTypeValueId' => old_transaction[:transaction_type_id],
-            'SourceTypeValueId' => old_transaction[:source_type_id]
+            'SourceTypeValueId' => old_transaction[:source_type_id],
+            'ScheduledTransactionId' => scheduled_transaction_id,
           }
         }
         post(refund_path, params)
diff --git a/spec/rock_rms/resources/refund_spec.rb b/spec/rock_rms/resources/refund_spec.rb
index 88f6c2c..4430953 100644
--- a/spec/rock_rms/resources/refund_spec.rb
+++ b/spec/rock_rms/resources/refund_spec.rb
@@ -71,6 +71,7 @@
                 ],
                 'TransactionTypeValueId' => 53,
                 'SourceTypeValueId' => 10,
+                'ScheduledTransactionId' => 1,
                 'TransactionCode' => nil
               }
             }
@@ -123,6 +124,7 @@
                     "EntityId" => nil
                   }
                 ],
+                'ScheduledTransactionId' => 1,
                 'TransactionTypeValueId' => 53,
                 'SourceTypeValueId' => 10,
                 'TransactionCode' => nil