diff --git a/backend/src/graphql/model/Transaction.ts b/backend/src/graphql/model/Transaction.ts
index e23334a8e..3aa3c429d 100644
--- a/backend/src/graphql/model/Transaction.ts
+++ b/backend/src/graphql/model/Transaction.ts
@@ -15,7 +15,6 @@ export class Transaction {
     this.balance = 0
     this.totalBalance = 0
     this.memo = ''
-    this.firstTransaction = false
   }
 
   @Field(() => String)
@@ -27,6 +26,15 @@ export class Transaction {
   @Field(() => Number)
   totalBalance: number
 
+  @Field({ nullable: true })
+  decayStart?: string
+
+  @Field({ nullable: true })
+  decayEnd?: string
+
+  @Field({ nullable: true })
+  decayDuration?: number
+
   @Field(() => String)
   memo: string
 
@@ -44,7 +52,4 @@ export class Transaction {
 
   @Field({ nullable: true })
   decay?: Decay
-
-  @Field(() => Boolean)
-  firstTransaction: boolean
 }