diff --git a/api/channel.go b/api/channel.go
index a65e86e..2a26d15 100644
--- a/api/channel.go
+++ b/api/channel.go
@@ -170,7 +170,7 @@ func (c *Client) DeleteChannel(channelID discord.ChannelID) error {
 // https://discord.com/developers/docs/resources/channel#edit-channel-permissions-json-params
 type EditChannelPermissionData struct {
 	// Type is either "role" or "member".
-	Type discord.OverwriteType `json:"type"`
+	Type discord.OverwriteType `json:"type,string"`
 	// Allow is a permission bit set for granted permissions.
 	Allow discord.Permissions `json:"allow,string"`
 	// Deny is a permission bit set for denied permissions.
diff --git a/discord/channel.go b/discord/channel.go
index 8de7538..5668ae6 100644
--- a/discord/channel.go
+++ b/discord/channel.go
@@ -1,7 +1,5 @@
 package discord
 
-import "github.com/diamondburned/arikawa/utils/json"
-
 // https://discord.com/developers/docs/resources/channel#channel-object
 type Channel struct {
 	// ID is the id of this channel.
@@ -107,42 +105,18 @@ type Overwrite struct {
 	// ID is the role or user id.
 	ID Snowflake `json:"id"`
 	// Type is either "role" or "member".
-	Type OverwriteType `json:"type"`
+	Type OverwriteType `json:"type,string"`
 	// Allow is a permission bit set for granted permissions.
 	Allow Permissions `json:"allow,string"`
 	// Deny is a permission bit set for denied permissions.
 	Deny Permissions `json:"deny,string"`
 }
 
-// UnmarshalJSON unmarshals the passed json data into the Overwrite.
-// This is necessary because Discord has different names for fields when
-// sending than receiving.
-func (o *Overwrite) UnmarshalJSON(data []byte) (err error) {
-	var recv struct {
-		ID    Snowflake     `json:"id"`
-		Type  OverwriteType `json:"type"`
-		Allow Permissions   `json:"allow_new,string"`
-		Deny  Permissions   `json:"deny_new,string"`
-	}
-
-	err = json.Unmarshal(data, &recv)
-	if err != nil {
-		return
-	}
-
-	o.ID = recv.ID
-	o.Type = recv.Type
-	o.Allow = recv.Allow
-	o.Deny = recv.Deny
-
-	return
-}
-
-type OverwriteType string
+type OverwriteType uint8
 
 const (
 	// OverwriteRole is an overwrite for a role.
-	OverwriteRole OverwriteType = "role"
+	OverwriteRole OverwriteType = iota
 	// OverwriteMember is an overwrite for a member.
-	OverwriteMember OverwriteType = "member"
+	OverwriteMember
 )
diff --git a/discord/guild.go b/discord/guild.go
index ea3c093..bac3b0a 100644
--- a/discord/guild.go
+++ b/discord/guild.go
@@ -23,7 +23,7 @@ type Guild struct {
 
 	// Permissions are the total permissions for the user in the guild
 	// (excludes overrides).
-	Permissions Permissions `json:"permissions_new,omitempty,string"`
+	Permissions Permissions `json:"permissions,omitempty,string"`
 
 	// VoiceRegion is the voice region id for the guild.
 	VoiceRegion string `json:"region"`
@@ -297,7 +297,7 @@ type Role struct {
 	Position int `json:"position"`
 
 	// Permissions is the permission bit set.
-	Permissions Permissions `json:"permissions_new,string"`
+	Permissions Permissions `json:"permissions,string"`
 
 	// Manages specifies whether this role is managed by an integration.
 	Managed bool `json:"managed"`