diff --git a/main.go b/main.go
index 9ac4ab6..f4296ff 100644
--- a/main.go
+++ b/main.go
@@ -1,7 +1,7 @@
 package main
 
 import (
-	"encoding/json"
+	"github.com/goccy/go-json"
 	"log"
 	"net/http"
 	_ "net/http/pprof"
diff --git a/profile005.pb.gz b/profile005.pb.gz
new file mode 100644
index 0000000..054b62d
Binary files /dev/null and b/profile005.pb.gz differ
diff --git a/samples/aloc.go b/samples/aloc.go
index ef43286..78a474a 100644
--- a/samples/aloc.go
+++ b/samples/aloc.go
@@ -1,18 +1,23 @@
 package samples
 
-import "fmt"
-
 func Aloc[O any, T []O](obj O, times int) (result T) {
 
+	result = make(T, times+1)
 	for i := 0; i <= times; i++ {
-		result = append(result, obj)
+		result[i] = obj
 	}
 
-	values := make([]any, 0)
 	for _, o := range result {
-		values = append(values, fmt.Sprintf("%+v\n", o))
+		if isError(o) {
+			result = nil
+			return
+		}
 	}
-	fmt.Println(values...)
 
 	return
 }
+
+func isError(o any) bool {
+	_, ok := o.(error)
+	return ok
+}
diff --git a/samples/aloc_test.go b/samples/aloc_test.go
index 3dac0ce..0e468c0 100644
--- a/samples/aloc_test.go
+++ b/samples/aloc_test.go
@@ -2,6 +2,7 @@ package samples_test
 
 import (
 	"testing"
+	"errors"
 
 	"github.com/rafaelhl/profiling-samples/samples"
 	"github.com/stretchr/testify/assert"
@@ -12,3 +13,9 @@ func TestAloc(t *testing.T) {
 
 	assert.Len(t, result, 11)
 }
+
+func TestAlocError(t *testing.T) {
+	result := samples.Aloc(errors.New("test"), 10)
+
+	assert.Len(t, result, 0)
+}