diff --git a/internal/browser/chromium/chromium_darwin.go b/internal/browser/chromium/chromium_darwin.go
index e905d64..a8ebe36 100644
--- a/internal/browser/chromium/chromium_darwin.go
+++ b/internal/browser/chromium/chromium_darwin.go
@@ -17,8 +17,8 @@ import (
 )
 
 var (
-	ErrWrongSecurityCommand   = errors.New("macOS wrong security command")
-	ErrCouldNotFindInKeychain = errors.New("macOS could not find in keychain")
+	errWrongSecurityCommand   = errors.New("wrong security command")
+	errCouldNotFindInKeychain = errors.New("could not be find in keychain")
 )
 
 func (c *chromium) GetMasterKey() ([]byte, error) {
@@ -39,19 +39,19 @@ func (c *chromium) GetMasterKey() ([]byte, error) {
 	}
 	if stderr.Len() > 0 {
 		if strings.Contains(stderr.String(), "could not be found") {
-			return nil, ErrCouldNotFindInKeychain
+			return nil, errCouldNotFindInKeychain
 		}
 		return nil, errors.New(stderr.String())
 	}
 	chromeSecret := bytes.TrimSpace(stdout.Bytes())
 	if chromeSecret == nil {
-		return nil, ErrWrongSecurityCommand
+		return nil, errWrongSecurityCommand
 	}
 	chromeSalt := []byte("saltysalt")
 	// @https://source.chromium.org/chromium/chromium/src/+/master:components/os_crypt/os_crypt_mac.mm;l=157
 	key := pbkdf2.Key(chromeSecret, chromeSalt, 1003, 16, sha1.New)
 	if key == nil {
-		return nil, ErrWrongSecurityCommand
+		return nil, errWrongSecurityCommand
 	}
 	c.masterKey = key
 	log.Infof("%s initialized master key success", c.name)
diff --git a/internal/decrypter/decrypter_darwin.go b/internal/decrypter/decrypter_darwin.go
index aaafadf..62ef35e 100644
--- a/internal/decrypter/decrypter_darwin.go
+++ b/internal/decrypter/decrypter_darwin.go
@@ -1,20 +1,9 @@
 package decrypter
 
-import (
-	"errors"
-)
-
-var (
-	errSecurityKeyIsEmpty = errors.New("input [security find-generic-password -wa 'Chrome'] in terminal")
-)
-
 func Chromium(key, encryptPass []byte) ([]byte, error) {
 	if len(encryptPass) <= 3 {
 		return nil, errPasswordIsEmpty
 	}
-	if len(key) == 0 {
-		return nil, errSecurityKeyIsEmpty
-	}
 
 	iv := []byte{32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32}
 	return aes128CBCDecrypt(key, iv, encryptPass[3:])
diff --git a/internal/decrypter/decrypter_windows.go b/internal/decrypter/decrypter_windows.go
index 8c17f8c..277d222 100644
--- a/internal/decrypter/decrypter_windows.go
+++ b/internal/decrypter/decrypter_windows.go
@@ -11,9 +11,6 @@ func Chromium(key, encryptPass []byte) ([]byte, error) {
 	if len(encryptPass) < 3 {
 		return nil, errPasswordIsEmpty
 	}
-	if len(key) == 0 {
-		return nil, errSecurityKeyIsEmpty
-	}
 
 	return aesGCMDecrypt(encryptPass[15:], key, encryptPass[3:15])
 }
@@ -22,9 +19,6 @@ func ChromiumForYandex(key, encryptPass []byte) ([]byte, error) {
 	if len(encryptPass) < 3 {
 		return nil, errPasswordIsEmpty
 	}
-	if len(key) == 0 {
-		return nil, errSecurityKeyIsEmpty
-	}
 	// remove Prefix 'v10'
 	// gcmBlockSize         = 16
 	// gcmTagSize           = 16