diff --git a/lib/buy_account_credit_form.rb b/lib/buy_account_credit_form.rb
index 8084bb0579490230b3767a543f146524c586705f..9c511e44f669a0adc2a1613ec91a9332d443d932 100644
--- a/lib/buy_account_credit_form.rb
+++ b/lib/buy_account_credit_form.rb
@@ -53,9 +53,9 @@ class BuyAccountCreditForm
 		amount_value = amount.to_f
 
 		if amount_value < 15
-			raise CreditCardSale::TooLowError
+			raise AmountTooLowError.new(amount_value, 15)
 		elsif amount_value > @max_top_up_amount
-			raise CreditCardSale::TooHighError
+			raise AmountTooHighError.new(amount_value, @max_top_up_amount)
 		end
 
 		{
diff --git a/test/test_buy_account_credit_form.rb b/test/test_buy_account_credit_form.rb
index ef0ede190995c479b390098a813299e7dd28af65..20cd3bb3c4a2b6c06c8465d614be0d72893566b9 100644
--- a/test/test_buy_account_credit_form.rb
+++ b/test/test_buy_account_credit_form.rb
@@ -101,7 +101,7 @@ class BuyAccountCreditFormTest < Minitest::Test
 			{ var: "payment_method", value: "0" },
 			{ var: "amount", value: "10" }
 		]
-		assert_raises(CreditCardSale::TooLowError) do
+		assert_raises(AmountTooLowError) do
 			@form.parse(iq_form)
 		end
 	end
@@ -112,7 +112,7 @@ class BuyAccountCreditFormTest < Minitest::Test
 			{ var: "payment_method", value: "0" },
 			{ var: "amount", value: "200" }
 		]
-		assert_raises(CreditCardSale::TooHighError) do
+		assert_raises(AmountTooHighError) do
 			@form.parse(iq_form)
 		end
 	end