diff --git a/proxy/trojan/validator.go b/proxy/trojan/validator.go
index 038069e13..f26f081e9 100644
--- a/proxy/trojan/validator.go
+++ b/proxy/trojan/validator.go
@@ -1,3 +1,5 @@
+// +build !confonly
+
 package trojan
 
 import (
@@ -7,14 +9,14 @@ import (
 	"v2ray.com/core/common/protocol"
 )
 
-// Validator stores valid trojan users
+// Validator stores valid trojan users.
 type Validator struct {
 	// Considering email's usage here, map + sync.Mutex/RWMutex may have better performance.
 	email sync.Map
 	users sync.Map
 }
 
-// Add a trojan user
+// Add a trojan user, Email must be empty or unique.
 func (v *Validator) Add(u *protocol.MemoryUser) error {
 	if u.Email != "" {
 		_, loaded := v.email.LoadOrStore(strings.ToLower(u.Email), u)
@@ -26,7 +28,7 @@ func (v *Validator) Add(u *protocol.MemoryUser) error {
 	return nil
 }
 
-// Del a trojan user
+// Del a trojan user with a non-empty Email.
 func (v *Validator) Del(e string) error {
 	if e == "" {
 		return newError("Email must not be empty.")
@@ -41,7 +43,7 @@ func (v *Validator) Del(e string) error {
 	return nil
 }
 
-// Get user with hashed key, nil if user doesn't exist.
+// Get a trojan user with hashed key, nil if user doesn't exist.
 func (v *Validator) Get(hash string) *protocol.MemoryUser {
 	u, _ := v.users.Load(hash)
 	if u != nil {
diff --git a/proxy/vless/validator.go b/proxy/vless/validator.go
index a19cc6323..ac3dc4f15 100644
--- a/proxy/vless/validator.go
+++ b/proxy/vless/validator.go
@@ -10,12 +10,14 @@ import (
 	"v2ray.com/core/common/uuid"
 )
 
+// Validator stores valid VLESS users.
 type Validator struct {
 	// Considering email's usage here, map + sync.Mutex/RWMutex may have better performance.
 	email sync.Map
 	users sync.Map
 }
 
+// Add a VLESS user, Email must be empty or unique.
 func (v *Validator) Add(u *protocol.MemoryUser) error {
 	if u.Email != "" {
 		_, loaded := v.email.LoadOrStore(strings.ToLower(u.Email), u)
@@ -27,6 +29,7 @@ func (v *Validator) Add(u *protocol.MemoryUser) error {
 	return nil
 }
 
+// Del a VLESS user with a non-empty Email.
 func (v *Validator) Del(e string) error {
 	if e == "" {
 		return newError("Email must not be empty.")
@@ -41,6 +44,7 @@ func (v *Validator) Del(e string) error {
 	return nil
 }
 
+// Get a VLESS user with UUID, nil if user doesn't exist.
 func (v *Validator) Get(id uuid.UUID) *protocol.MemoryUser {
 	u, _ := v.users.Load(id)
 	if u != nil {