diff --git a/backend/src/graphql/resolver/TransactionResolver.test.ts b/backend/src/graphql/resolver/TransactionResolver.test.ts
index 69673d47c..6115ef846 100644
--- a/backend/src/graphql/resolver/TransactionResolver.test.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.test.ts
@@ -376,7 +376,7 @@ describe('send coins', () => {
             mutation: sendCoins,
             variables: {
               email: 'peter@lustig.de',
-              amount: 50,
+              amount: 10,
               memo: 'first transaction',
             },
           }),
@@ -392,7 +392,7 @@ describe('send coins', () => {
             mutation: sendCoins,
             variables: {
               email: 'peter@lustig.de',
-              amount: 50,
+              amount: 20,
               memo: 'second transaction',
             },
           }),
@@ -408,7 +408,7 @@ describe('send coins', () => {
             mutation: sendCoins,
             variables: {
               email: 'peter@lustig.de',
-              amount: 50,
+              amount: 30,
               memo: 'third transaction',
             },
           }),
@@ -424,7 +424,7 @@ describe('send coins', () => {
             mutation: sendCoins,
             variables: {
               email: 'peter@lustig.de',
-              amount: 50,
+              amount: 40,
               memo: 'fourth transaction',
             },
           }),
diff --git a/backend/src/util/validate.ts b/backend/src/util/validate.ts
index edd8d55f6..f182ab7c1 100644
--- a/backend/src/util/validate.ts
+++ b/backend/src/util/validate.ts
@@ -24,7 +24,7 @@ async function calculateBalance(
   time: Date,
   transactionLink?: dbTransactionLink | null,
 ): Promise<{ balance: Decimal; decay: Decay; lastTransactionId: number } | null> {
-  const lastTransaction = await Transaction.findOne({ userId }, { order: { balanceDate: 'DESC' } })
+  const lastTransaction = await Transaction.findOne({ userId }, { order: { id: 'DESC' } })
   if (!lastTransaction) return null
 
   const decay = calculateDecay(lastTransaction.balance, lastTransaction.balanceDate, time)