diff --git a/app/models/trade/model/payment.rb b/app/models/trade/model/payment.rb
index 3695d4c17..d26d2e081 100644
--- a/app/models/trade/model/payment.rb
+++ b/app/models/trade/model/payment.rb
@@ -181,7 +181,7 @@ def confirm
       last.state = 'confirmed'
       last.order.compute_received_amount
 
-      self.compute_checked_amount
+      compute_checked_amount
     end
 
     def confirm!(params = {})
diff --git a/app/models/trade/model/payment/wallet_payment.rb b/app/models/trade/model/payment/wallet_payment.rb
index 998b1af59..c4bf1ea82 100644
--- a/app/models/trade/model/payment/wallet_payment.rb
+++ b/app/models/trade/model/payment/wallet_payment.rb
@@ -3,7 +3,7 @@ module Model::Payment::WalletPayment
     extend ActiveSupport::Concern
 
     included do
-      belongs_to :wallet
+      belongs_to :wallet, inverse_of: :wallet_payments
       has_many :wallet_logs, ->(o){ where(wallet_id: o.wallet_id) }, as: :source
       has_many :refunds, class_name: 'WalletRefund', primary_key: [:id, :wallet_id], foreign_key: [:payment_id, :wallet_id]