diff --git a/proxy/errors.go b/proxy/common/errors/errors.go
similarity index 91%
rename from proxy/errors.go
rename to proxy/common/errors/errors.go
index 4eb105696..edafcce7d 100644
--- a/proxy/errors.go
+++ b/proxy/common/errors/errors.go
@@ -1,4 +1,4 @@
-package proxy
+package errors
 
 import (
 	"errors"
diff --git a/proxy/socks/protocol/socks.go b/proxy/socks/protocol/socks.go
index 38d8a0070..a1da8ec0d 100644
--- a/proxy/socks/protocol/socks.go
+++ b/proxy/socks/protocol/socks.go
@@ -7,7 +7,7 @@ import (
 	"github.com/v2ray/v2ray-core/common/alloc"
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
-	"github.com/v2ray/v2ray-core/proxy"
+	proxyerrors "github.com/v2ray/v2ray-core/proxy/common/errors"
 	"github.com/v2ray/v2ray-core/transport"
 )
 
@@ -66,7 +66,7 @@ func ReadAuthentication(reader io.Reader) (auth Socks5AuthenticationRequest, aut
 	auth.version = buffer.Value[0]
 	if auth.version != socksVersion {
 		log.Warning("Unknown protocol version %d", auth.version)
-		err = proxy.InvalidProtocolVersion
+		err = proxyerrors.InvalidProtocolVersion
 		return
 	}
 
diff --git a/proxy/socks/socks.go b/proxy/socks/socks.go
index 493245903..53899d3ce 100644
--- a/proxy/socks/socks.go
+++ b/proxy/socks/socks.go
@@ -12,7 +12,7 @@ import (
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
 	"github.com/v2ray/v2ray-core/common/retry"
-	"github.com/v2ray/v2ray-core/proxy"
+	proxyerrors "github.com/v2ray/v2ray-core/proxy/common/errors"
 	jsonconfig "github.com/v2ray/v2ray-core/proxy/socks/config/json"
 	"github.com/v2ray/v2ray-core/proxy/socks/protocol"
 )
@@ -128,7 +128,7 @@ func (server *SocksServer) handleSocks5(reader *v2net.TimeOutReader, writer io.W
 		}
 		if status != byte(0) {
 			log.Warning("Invalid user account: %s", upRequest.AuthDetail())
-			return proxy.InvalidAuthentication
+			return proxyerrors.InvalidAuthentication
 		}
 	}
 
diff --git a/proxy/vmess/protocol/vmess.go b/proxy/vmess/protocol/vmess.go
index 0c01ab775..f71a844b4 100644
--- a/proxy/vmess/protocol/vmess.go
+++ b/proxy/vmess/protocol/vmess.go
@@ -13,7 +13,7 @@ import (
 	v2io "github.com/v2ray/v2ray-core/common/io"
 	"github.com/v2ray/v2ray-core/common/log"
 	v2net "github.com/v2ray/v2ray-core/common/net"
-	"github.com/v2ray/v2ray-core/proxy"
+	proxyerrors "github.com/v2ray/v2ray-core/proxy/common/errors"
 	"github.com/v2ray/v2ray-core/proxy/vmess/config"
 	"github.com/v2ray/v2ray-core/proxy/vmess/protocol/user"
 	"github.com/v2ray/v2ray-core/transport"
@@ -77,7 +77,7 @@ func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
 
 	userId, timeSec, valid := r.vUserSet.GetUser(buffer.Value[:nBytes])
 	if !valid {
-		return nil, proxy.InvalidAuthentication
+		return nil, proxyerrors.InvalidAuthentication
 	}
 
 	aesCipher, err := aes.NewCipher(userId.CmdKey())
@@ -104,7 +104,7 @@ func (r *VMessRequestReader) Read(reader io.Reader) (*VMessRequest, error) {
 
 	if request.Version != Version {
 		log.Warning("Invalid protocol version %d", request.Version)
-		return nil, proxy.InvalidProtocolVersion
+		return nil, proxyerrors.InvalidProtocolVersion
 	}
 
 	request.RequestIV = buffer.Value[1:17]       // 16 bytes