diff --git a/pkg/validators/currency.go b/pkg/validators/currency.go
index 79cb2d6b..677b9c9f 100644
--- a/pkg/validators/currency.go
+++ b/pkg/validators/currency.go
@@ -168,6 +168,7 @@ var allCurrencyNames = map[string]bool{
 	"ZWL": true, //Zimbabwe Dollar
 }
 
+// ValidCurrency returns whether the given currency is valid
 func ValidCurrency(fl validator.FieldLevel) bool {
 	if value, ok := fl.Field().Interface().(string); ok {
 		if value == ParentAccountCurrencyPlaceholder {
diff --git a/pkg/validators/email.go b/pkg/validators/email.go
index a3987b29..43c11c2e 100644
--- a/pkg/validators/email.go
+++ b/pkg/validators/email.go
@@ -6,6 +6,7 @@ import (
 	"github.com/mayswind/lab/pkg/utils"
 )
 
+// ValidEmail returns whether the given email is valid
 func ValidEmail(fl validator.FieldLevel) bool {
 	if value, ok := fl.Field().Interface().(string); ok {
 		if utils.IsValidEmail(value) {
diff --git a/pkg/validators/hex_rgb_color.go b/pkg/validators/hex_rgb_color.go
index 89bb6a43..90a25d1b 100644
--- a/pkg/validators/hex_rgb_color.go
+++ b/pkg/validators/hex_rgb_color.go
@@ -6,6 +6,7 @@ import (
 	"github.com/mayswind/lab/pkg/utils"
 )
 
+// ValidHexRGBColor returns whether the given hex reb color is valid
 func ValidHexRGBColor(fl validator.FieldLevel) bool {
 	if value, ok := fl.Field().Interface().(string); ok {
 		if utils.IsValidHexRGBColor(value) {
diff --git a/pkg/validators/not_blank.go b/pkg/validators/not_blank.go
index faef54f7..9ebed708 100644
--- a/pkg/validators/not_blank.go
+++ b/pkg/validators/not_blank.go
@@ -6,6 +6,7 @@ import (
 	"github.com/go-playground/validator/v10"
 )
 
+// NotBlank returns whether the given content is not blank
 func NotBlank(fl validator.FieldLevel) bool {
 	if value, ok := fl.Field().Interface().(string); ok {
 		if value != "" && strings.Trim(value, " ") != "" {
diff --git a/pkg/validators/username.go b/pkg/validators/username.go
index c70f4e48..729f165e 100644
--- a/pkg/validators/username.go
+++ b/pkg/validators/username.go
@@ -6,6 +6,7 @@ import (
 	"github.com/mayswind/lab/pkg/utils"
 )
 
+// ValidUsername returns whether the given user name is valid
 func ValidUsername(fl validator.FieldLevel) bool {
 	if value, ok := fl.Field().Interface().(string); ok {
 		if utils.IsValidUsername(value) {