diff --git a/channel.go b/channel.go
index a576d8a..5be2a79 100644
--- a/channel.go
+++ b/channel.go
@@ -4,11 +4,15 @@ import (
 	"encoding/json"
 	"fmt"
 	"reflect"
+	"time"
+
+	"github.com/oklog/ulid/v2"
 )
 
 // Channel struct.
 type Channel struct {
-	Client *Client
+	Client    *Client
+	CreatedAt time.Time
 
 	Id                 string      `json:"_id"`
 	ChannelType        string      `json:"channel_type"`
@@ -32,6 +36,18 @@ type FetchedMessages struct {
 	Users    []*User    `json:"users"`
 }
 
+// Calculate creation date and edit the struct.
+func (c *Channel) CalculateCreationDate() error {
+	ulid, err := ulid.Parse(c.Id)
+
+	if err != nil {
+		return err
+	}
+
+	c.CreatedAt = time.UnixMilli(int64(ulid.Time()))
+	return nil
+}
+
 // Send a message to the channel.
 func (c Channel) SendMessage(message *SendMessage) (*Message, error) {
 	if message.Nonce == "" {
diff --git a/http.go b/http.go
index d8b0e13..06e31e3 100644
--- a/http.go
+++ b/http.go
@@ -2,6 +2,7 @@ package revoltgo
 
 import (
 	"bytes"
+	"fmt"
 	"io/ioutil"
 	"net/http"
 )
@@ -26,6 +27,10 @@ func (c Client) Request(method, path string, data []byte) ([]byte, error) {
 		return []byte{}, err
 	}
 
+	if !(resp.StatusCode >= 200 && resp.StatusCode < 300) {
+		return []byte{}, fmt.Errorf(resp.Status)
+	}
+
 	defer resp.Body.Close()
 	body, err := ioutil.ReadAll(resp.Body)
 
diff --git a/message.go b/message.go
index e46d9b3..d3c06fe 100644
--- a/message.go
+++ b/message.go
@@ -1,8 +1,11 @@
 package revoltgo
 
+import "time"
+
 // Message struct
 type Message struct {
-	Client *Client
+	Client    *Client
+	CreatedAt time.Time
 
 	Id          string          `json:"_id"`
 	Nonce       string          `json:"nonce"`
diff --git a/other.go b/other.go
index 6896621..bac0a07 100644
--- a/other.go
+++ b/other.go
@@ -45,10 +45,10 @@ func (sms *SendMessage) CreateNonce() *SendMessage {
 // Edit channel struct.
 // Please see: https://developers.revolt.chat/api/#tag/Channel-Information/paths/~1channels~1:channel/patch for more information.
 type EditChannel struct {
-	Name        string `json:"name"`
-	Description string `json:"description"`
-	Icon        string `json:"icon"`
-	Remove      string `json:"remove"`
+	Name        string `json:"name,omitempty"`
+	Description string `json:"description,omitempty"`
+	Icon        string `json:"icon,omitempty"`
+	Remove      string `json:"remove,omitempty"`
 }
 
 // Set name for struct.
diff --git a/user.go b/user.go
index 39264b9..cc927e1 100644
--- a/user.go
+++ b/user.go
@@ -1,8 +1,11 @@
 package revoltgo
 
+import "time"
+
 // User struct.
 type User struct {
-	Client *Client
+	Client    *Client
+	CreatedAt time.Time
 
 	Id             string           `json:"_id"`
 	Username       string           `json:"username"`
diff --git a/utils.go b/utils.go
index 2d7d9a1..55e2ada 100644
--- a/utils.go
+++ b/utils.go
@@ -10,5 +10,6 @@ import (
 func genULID() string {
 	t := time.Now()
 	entropy := ulid.Monotonic(rand.New(rand.NewSource(t.UnixNano())), 0)
+
 	return ulid.MustNew(ulid.Timestamp(t), entropy).String()
 }