diff --git a/pkg/ueps/reader.go b/pkg/ueps/reader.go
index 18ee9ca..bba43f6 100644
--- a/pkg/ueps/reader.go
+++ b/pkg/ueps/reader.go
@@ -112,9 +112,9 @@ func ReadAndVerify(reader *bufio.Reader, sharedSecret []byte) (*ParsedPacket, er
 	messageAuthCode := hmac.New(sha256.New, sharedSecret)
 	messageAuthCode.Write(signedData.Bytes())
 	messageAuthCode.Write(payload)
-	expectedMAC := messageAuthCode.Sum(nil)
+	expectedMessageAuthCode := messageAuthCode.Sum(nil)
 
-	if !hmac.Equal(signature, expectedMAC) {
+	if !hmac.Equal(signature, expectedMessageAuthCode) {
 		return nil, errIntegrityViolation
 	}