diff --git a/pkg/captcha/db.go b/pkg/captcha/db.go
index cab8d6d..1fc1f7e 100644
--- a/pkg/captcha/db.go
+++ b/pkg/captcha/db.go
@@ -38,8 +38,8 @@ type CaptchaDB interface {
 	New(data string, captcha Captcha) (Captcha, ID)
 	GetExpiry() time.Duration
 	SetExpiry(expiry time.Duration)
-	Image(id ID, style string) (*image.Image, error)
-	Solve(id ID, answer Answer) (bool, error)
-	IsSolved(id ID) (bool, error)
-	Remove(id ID) error
+	Image(id ID, style string) *image.Image
+	Solve(id ID, answer Answer) bool
+	IsSolved(id ID) bool
+	Remove(id ID)
 }