diff --git a/pkg/api/transactions.go b/pkg/api/transactions.go
index b36c2537..f6e35557 100644
--- a/pkg/api/transactions.go
+++ b/pkg/api/transactions.go
@@ -453,6 +453,10 @@ func (a *TransactionsApi) TransactionModifyHandler(c *core.Context) (interface{}
 
 	transactionTagIds := allTransactionTagIds[transaction.TransactionId]
 
+	if transactionTagIds == nil {
+		transactionTagIds = make([]int64, 0, 0)
+	}
+
 	newTransaction := &models.Transaction{
 		TransactionId:     transaction.TransactionId,
 		Uid:               uid,