diff --git a/backend/internal/infrastructure/payments/mercadopago.go b/backend/internal/infrastructure/payments/mercadopago.go
index 011a6d8..ff42d35 100644
--- a/backend/internal/infrastructure/payments/mercadopago.go
+++ b/backend/internal/infrastructure/payments/mercadopago.go
@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"net/http"
 	"strconv"
-	"strings"
 
 	"github.com/saveinmed/backend-go/internal/domain"
 )
diff --git a/backend/internal/infrastructure/payments/split_math_test.go b/backend/internal/infrastructure/payments/split_math_test.go
index f668bc7..72f4766 100644
--- a/backend/internal/infrastructure/payments/split_math_test.go
+++ b/backend/internal/infrastructure/payments/split_math_test.go
@@ -1,4 +1,4 @@
-package tests
+package payments
 
 import (
 	"math"
diff --git a/backend/internal/usecase/shipping_usecase.go b/backend/internal/usecase/shipping_usecase.go
index 1c055b7..2d4f066 100644
--- a/backend/internal/usecase/shipping_usecase.go
+++ b/backend/internal/usecase/shipping_usecase.go
@@ -3,6 +3,7 @@ package usecase
 import (
 	"context"
 	"errors"
+	"fmt"
 	"math"
 
 	"github.com/gofrs/uuid/v5"
diff --git a/backend/internal/usecase/usecase.go b/backend/internal/usecase/usecase.go
index dffe3fd..60b96f2 100644
--- a/backend/internal/usecase/usecase.go
+++ b/backend/internal/usecase/usecase.go
@@ -2,6 +2,7 @@ package usecase
 
 import (
 	"context"
+	"log"
 	"time"
 
 	"github.com/gofrs/uuid/v5"