diff --git a/shadowaead/cipher.go b/shadowaead/cipher.go
index 952d5b27..19410df9 100644
--- a/shadowaead/cipher.go
+++ b/shadowaead/cipher.go
@@ -46,8 +46,7 @@ func (a *metaCipher) SaltSize() int {
 func (a *metaCipher) Encrypter(salt []byte) (cipher.AEAD, error) {
 	subkey := make([]byte, a.KeySize())
 	hkdfSHA1(a.psk, salt, []byte("ss-subkey"), subkey)
-	aead, err := a.makeAEAD(subkey)
-	return aead, err
+	return a.makeAEAD(subkey)
 }
 func (a *metaCipher) Decrypter(salt []byte) (cipher.AEAD, error) {
 	subkey := make([]byte, a.KeySize())