diff --git a/encryption/spiral/spiral.go b/encryption/spiral/spiral.go
index 3e090e1..820d29c 100644
--- a/encryption/spiral/spiral.go
+++ b/encryption/spiral/spiral.go
@@ -29,7 +29,7 @@ func generateKey(key string) []byte {
 // 对给定的数据进行加密。
 func Encrypt(data string, strength ...Strength) (string, error) {
 	var ivGen aes.IVGenerator
-	if append(strength, Compatible)[0] == Compatible {
+	if append(strength, Enhanced)[0] == Compatible {
 		ivGen = aes.PrefixIVGenerator
 	} else {
 		ivGen = aes.XorIVGenerator
@@ -50,7 +50,7 @@ func Encrypt(data string, strength ...Strength) (string, error) {
 // 对给定的数据进行解密。
 func Decrypt(data string, strength ...Strength) (string, error) {
 	var ivGen aes.IVGenerator
-	if append(strength, Compatible)[0] == Compatible {
+	if append(strength, Enhanced)[0] == Compatible {
 		ivGen = aes.PrefixIVGenerator
 	} else {
 		ivGen = aes.XorIVGenerator