diff --git a/internal/captcha/captcha.go b/internal/captcha/captcha.go
index efe6eb1..31e3b2a 100644
--- a/internal/captcha/captcha.go
+++ b/internal/captcha/captcha.go
@@ -24,7 +24,7 @@ type ICaptcha interface {
 	GetAnswer() Answer
 	Solve(answer Answer) bool
 	IsSolved() bool
-	Expire() time.Time
+	Expiry() time.Time
 }
 
 type Captcha struct {
@@ -39,6 +39,6 @@ func GenerateAnswer() Answer {
 	return (Answer(ans.String()))
 }
 
-func ExpireDate(expiration time.Duration) time.Time {
-	return time.Now().Add(expiration)
+func ExpiryDate(expiry time.Duration) time.Time {
+	return time.Now().Add(expiry)
 }