diff --git a/app/proxyman/command/command.go b/app/proxyman/command/command.go
old mode 100644
new mode 100755
index ca0b662c4..e80f3d2c2
--- a/app/proxyman/command/command.go
+++ b/app/proxyman/command/command.go
@@ -37,7 +37,7 @@ func (op *AddUserOperation) ApplyInbound(ctx context.Context, handler core.Inbou
 	}
 	um, ok := p.(proxy.UserManager)
 	if !ok {
-		return newError("proxy is not an UserManager")
+		return newError("proxy is not a UserManager")
 	}
 	return um.AddUser(ctx, op.User)
 }
@@ -50,7 +50,7 @@ func (op *RemoveUserOperation) ApplyInbound(ctx context.Context, handler core.In
 	}
 	um, ok := p.(proxy.UserManager)
 	if !ok {
-		return newError("proxy is not an UserManager")
+		return newError("proxy is not a UserManager")
 	}
 	return um.RemoveUser(ctx, op.Email)
 }
diff --git a/common/crypto/chunk.go b/common/crypto/chunk.go
old mode 100644
new mode 100755
index e54119984..decfdffc9
--- a/common/crypto/chunk.go
+++ b/common/crypto/chunk.go
@@ -8,13 +8,13 @@ import (
 	"v2ray.com/core/common/serial"
 )
 
-// ChunkSizeDecoder is an utility class to decode size value from bytes.
+// ChunkSizeDecoder is a utility class to decode size value from bytes.
 type ChunkSizeDecoder interface {
 	SizeBytes() int
 	Decode([]byte) (uint16, error)
 }
 
-// ChunkSizeEncoder is an utility class to encode size value into bytes.
+// ChunkSizeEncoder is a utility class to encode size value into bytes.
 type ChunkSizeEncoder interface {
 	SizeBytes() int
 	Encode(uint16, []byte) []byte
diff --git a/common/protocol/account.go b/common/protocol/account.go
old mode 100644
new mode 100755
index 1c6a1eeaa..7793974a7
--- a/common/protocol/account.go
+++ b/common/protocol/account.go
@@ -1,6 +1,6 @@
 package protocol
 
-// Account is an user identity used for authentication.
+// Account is a user identity used for authentication.
 type Account interface {
 	Equals(Account) bool
 }
diff --git a/common/protocol/context.go b/common/protocol/context.go
old mode 100644
new mode 100755
index 6a2d24090..17437719a
--- a/common/protocol/context.go
+++ b/common/protocol/context.go
@@ -10,12 +10,12 @@ const (
 	userKey key = iota
 )
 
-// ContextWithUser returns a context combined with an User.
+// ContextWithUser returns a context combined with a User.
 func ContextWithUser(ctx context.Context, user *User) context.Context {
 	return context.WithValue(ctx, userKey, user)
 }
 
-// UserFromContext extracts an User from the given context, if any.
+// UserFromContext extracts a User from the given context, if any.
 func UserFromContext(ctx context.Context) *User {
 	v := ctx.Value(userKey)
 	if v == nil {
diff --git a/common/protocol/id.go b/common/protocol/id.go
old mode 100644
new mode 100755
index e6b0176ee..6deb0ccec
--- a/common/protocol/id.go
+++ b/common/protocol/id.go
@@ -19,7 +19,7 @@ func DefaultIDHash(key []byte) hash.Hash {
 	return hmac.New(md5.New, key)
 }
 
-// The ID of en entity, in the form of an UUID.
+// The ID of en entity, in the form of a UUID.
 type ID struct {
 	uuid   uuid.UUID
 	cmdKey [IDBytesLen]byte
diff --git a/common/serial/bytes.go b/common/serial/bytes.go
old mode 100644
new mode 100755
index 14c7676cc..69475b19a
--- a/common/serial/bytes.go
+++ b/common/serial/bytes.go
@@ -7,12 +7,12 @@ func ByteToHexString(value byte) string {
 	return hex.EncodeToString([]byte{value})
 }
 
-// BytesToUint16 deserializes a byte array to an uint16 in big endian order. The byte array must have at least 2 elements.
+// BytesToUint16 deserializes a byte array to a uint16 in big endian order. The byte array must have at least 2 elements.
 func BytesToUint16(value []byte) uint16 {
 	return uint16(value[0])<<8 | uint16(value[1])
 }
 
-// BytesToUint32 deserializes a byte array to an uint32 in big endian order. The byte array must have at least 4 elements.
+// BytesToUint32 deserializes a byte array to a uint32 in big endian order. The byte array must have at least 4 elements.
 func BytesToUint32(value []byte) uint32 {
 	return uint32(value[0])<<24 |
 		uint32(value[1])<<16 |
diff --git a/common/serial/numbers.go b/common/serial/numbers.go
old mode 100644
new mode 100755
index 556fcb345..3b15c38ff
--- a/common/serial/numbers.go
+++ b/common/serial/numbers.go
@@ -3,7 +3,7 @@ package serial
 import "strconv"
 import "io"
 
-// Uint16ToBytes serializes an uint16 into bytes in big endian order.
+// Uint16ToBytes serializes a uint16 into bytes in big endian order.
 func Uint16ToBytes(value uint16, b []byte) []byte {
 	return append(b, byte(value>>8), byte(value))
 }
diff --git a/common/signal/done.go b/common/signal/done.go
old mode 100644
new mode 100755
index bedf50abe..351f8c630
--- a/common/signal/done.go
+++ b/common/signal/done.go
@@ -4,7 +4,7 @@ import (
 	"sync"
 )
 
-// Done is an utility for notifications of something being done.
+// Done is a utility for notifications of something being done.
 type Done struct {
 	access sync.Mutex
 	c      chan struct{}
diff --git a/common/signal/notifier.go b/common/signal/notifier.go
old mode 100644
new mode 100755
index 0a0362785..19836e54f
--- a/common/signal/notifier.go
+++ b/common/signal/notifier.go
@@ -1,6 +1,6 @@
 package signal
 
-// Notifier is an utility for notifying changes. The change producer may notify changes multiple time, and the consumer may get notified asynchronously.
+// Notifier is a utility for notifying changes. The change producer may notify changes multiple time, and the consumer may get notified asynchronously.
 type Notifier struct {
 	c chan struct{}
 }
diff --git a/common/uuid/uuid.go b/common/uuid/uuid.go
old mode 100644
new mode 100755
index 0e0ca3869..06b219a0f
--- a/common/uuid/uuid.go
+++ b/common/uuid/uuid.go
@@ -61,14 +61,14 @@ func (u *UUID) Next() UUID {
 	}
 }
 
-// New creates an UUID with random value.
+// New creates a UUID with random value.
 func New() UUID {
 	var uuid UUID
 	common.Must2(rand.Read(uuid.Bytes()))
 	return uuid
 }
 
-// ParseBytes converts an UUID in byte form to object.
+// ParseBytes converts a UUID in byte form to object.
 func ParseBytes(b []byte) (UUID, error) {
 	var uuid UUID
 	if len(b) != 16 {
@@ -78,7 +78,7 @@ func ParseBytes(b []byte) (UUID, error) {
 	return uuid, nil
 }
 
-// ParseString converts an UUID in string form to object.
+// ParseString converts a UUID in string form to object.
 func ParseString(str string) (UUID, error) {
 	var uuid UUID
 
diff --git a/config.go b/config.go
old mode 100644
new mode 100755
index 345af0c5e..d03f0673e
--- a/config.go
+++ b/config.go
@@ -16,7 +16,7 @@ type ConfigFormat struct {
 	Loader    ConfigLoader
 }
 
-// ConfigLoader is an utility to load V2Ray config from external source.
+// ConfigLoader is a utility to load V2Ray config from external source.
 type ConfigLoader func(input io.Reader) (*Config, error)
 
 var (
diff --git a/core.go b/core.go
old mode 100644
new mode 100755
index bcc3fc686..5ad599ba1
--- a/core.go
+++ b/core.go
@@ -19,7 +19,7 @@ var (
 	version  = "3.16"
 	build    = "Custom"
 	codename = "die Commanderin"
-	intro    = "An unified platform for anti-censorship."
+	intro    = "A unified platform for anti-censorship."
 )
 
 // Version returns V2Ray's version as a string, in the form of "x.y.z" where x, y and z are numbers.
diff --git a/proxy/http/server.go b/proxy/http/server.go
old mode 100644
new mode 100755
index ec30bd115..ffc7a1bc5
--- a/proxy/http/server.go
+++ b/proxy/http/server.go
@@ -21,7 +21,7 @@ import (
 	"v2ray.com/core/transport/internet"
 )
 
-// Server is a HTTP proxy server.
+// Server is an HTTP proxy server.
 type Server struct {
 	config *ServerConfig
 	v      *core.Instance
diff --git a/proxy/proxy.go b/proxy/proxy.go
old mode 100644
new mode 100755
index 0278d1185..a0d0ac422
--- a/proxy/proxy.go
+++ b/proxy/proxy.go
@@ -41,7 +41,7 @@ type UserManager interface {
 	// AddUser adds a new user.
 	AddUser(context.Context, *protocol.User) error
 
-	// RemoveUser removes an user by email.
+	// RemoveUser removes a user by email.
 	RemoveUser(context.Context, string) error
 }
 
diff --git a/proxy/vmess/account.pb.go b/proxy/vmess/account.pb.go
old mode 100644
new mode 100755
index d78ba2960..05607fa07
--- a/proxy/vmess/account.pb.go
+++ b/proxy/vmess/account.pb.go
@@ -17,7 +17,7 @@ var _ = math.Inf
 const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
 
 type Account struct {
-	// ID of the account, in the form of an UUID, e.g., "66ad4540-b58c-4ad2-9926-ea63445a9b57".
+	// ID of the account, in the form of a UUID, e.g., "66ad4540-b58c-4ad2-9926-ea63445a9b57".
 	Id string `protobuf:"bytes,1,opt,name=id" json:"id,omitempty"`
 	// Number of alternative IDs. Client and server must share the same number.
 	AlterId uint32 `protobuf:"varint,2,opt,name=alter_id,json=alterId" json:"alter_id,omitempty"`
diff --git a/proxy/vmess/account.proto b/proxy/vmess/account.proto
old mode 100644
new mode 100755
index c69317d97..343749144
--- a/proxy/vmess/account.proto
+++ b/proxy/vmess/account.proto
@@ -9,7 +9,7 @@ option java_multiple_files = true;
 import "v2ray.com/core/common/protocol/headers.proto";
 
 message Account {
-  // ID of the account, in the form of an UUID, e.g., "66ad4540-b58c-4ad2-9926-ea63445a9b57".
+  // ID of the account, in the form of a UUID, e.g., "66ad4540-b58c-4ad2-9926-ea63445a9b57".
   string id = 1;
   // Number of alternative IDs. Client and server must share the same number.
   uint32 alter_id = 2;
diff --git a/transport/internet/kcp/segment.go b/transport/internet/kcp/segment.go
old mode 100644
new mode 100755
index 9af1629dd..25b475900
--- a/transport/internet/kcp/segment.go
+++ b/transport/internet/kcp/segment.go
@@ -9,7 +9,7 @@ import (
 type Command byte
 
 const (
-	// CommandACK indicates a AckSegment.
+	// CommandACK indicates an AckSegment.
 	CommandACK Command = 0
 	// CommandData indicates a DataSegment.
 	CommandData Command = 1
diff --git a/transport/internet/websocket/ws.go b/transport/internet/websocket/ws.go
old mode 100644
new mode 100755
index 7e5f1c7af..e9863b031
--- a/transport/internet/websocket/ws.go
+++ b/transport/internet/websocket/ws.go
@@ -1,6 +1,6 @@
 /*Package websocket implements Websocket transport
 
-Websocket transport implements a HTTP(S) compliable, surveillance proof transport method with plausible deniability.
+Websocket transport implements an HTTP(S) compliable, surveillance proof transport method with plausible deniability.
 */
 package websocket
 
diff --git a/v2ray.go b/v2ray.go
index 8bd4dc718..28af89a63 100755
--- a/v2ray.go
+++ b/v2ray.go
@@ -94,7 +94,7 @@ func (s *Instance) CreateObject(config interface{}) (interface{}, error) {
 	return common.CreateObject(ctx, config)
 }
 
-// ID returns an unique ID for this V2Ray instance.
+// ID returns a unique ID for this V2Ray instance.
 func (s *Instance) ID() uuid.UUID {
 	return s.id
 }