diff --git a/internal/captcha/instance.go b/internal/captcha/instance.go
index ce5d56d..8315a13 100644
--- a/internal/captcha/instance.go
+++ b/internal/captcha/instance.go
@@ -8,8 +8,8 @@ import (
 var captchaDb CaptchaDB = CaptchaDB{
 	DB: make(map[ID]ICaptcha)}
 
-func Init(expiration time.Duration) {
-	captchaDb.SetExpiration(expiration)
+func Init(expiry time.Duration) {
+	captchaDb.SetExpiry(expiry)
 }
 
 func New(data string, captcha ICaptcha) (ICaptcha, ID) {
@@ -28,6 +28,6 @@ func IsSolved(id ID) (bool, error) {
 	return captchaDb.IsSolved(id)
 }
 
-func GetExpireInterval() time.Duration {
-	return captchaDb.ExpireInterval
+func GetExpiry() time.Duration {
+	return captchaDb.ExpireIn
 }