diff --git a/pkg/ueps/reader_test.go b/pkg/ueps/reader_test.go
index 6363f23..c5b6e43 100644
--- a/pkg/ueps/reader_test.go
+++ b/pkg/ueps/reader_test.go
@@ -6,8 +6,8 @@ import (
 	"testing"
 )
 
-// builder := NewPacketBuilder(0x01, []byte("hello")); frame, _ := builder.MarshalAndSign(secret)
-// packet, err := ReadAndVerify(bufio.NewReader(bytes.NewReader(frame)), secret)
+// builder := NewPacketBuilder(0x01, []byte("hello")); frame, _ := builder.MarshalAndSign(sharedSecret)
+// packet, err := ReadAndVerify(bufio.NewReader(bytes.NewReader(frame)), sharedSecret)
 // packet.Header.IntentID == 0x01; packet.Payload == []byte("hello")
 func TestReader_ReadAndVerify_Good(t *testing.T) {
 	sharedSecret := []byte("test-shared-secret")
@@ -40,9 +40,9 @@ func TestReader_ReadAndVerify_Good(t *testing.T) {
 	}
 }
 
-// frame, _ := NewPacketBuilder(0x02, []byte("sensitive data")).MarshalAndSign(secret)
+// frame, _ := NewPacketBuilder(0x02, []byte("sensitive data")).MarshalAndSign(sharedSecret)
 // corrupted := append([]byte(nil), frame...); corrupted[len(corrupted)-1] ^= 0xFF
-// packet, err := ReadAndVerify(bufio.NewReader(bytes.NewReader(corrupted)), secret)
+// packet, err := ReadAndVerify(bufio.NewReader(bytes.NewReader(corrupted)), sharedSecret)
 // err == errIntegrityViolation (HMAC mismatch on tampered payload)
 func TestReader_ReadAndVerify_Bad(t *testing.T) {
 	sharedSecret := []byte("test-shared-secret")
@@ -72,7 +72,7 @@ func TestReader_ReadAndVerify_Bad(t *testing.T) {
 }
 
 // frameWithoutHMAC := []byte{TagVersion, 0x01, 0x09, TagPayload, 'x'}
-// packet, err := ReadAndVerify(bufio.NewReader(bytes.NewReader(frameWithoutHMAC)), secret)
+// packet, err := ReadAndVerify(bufio.NewReader(bytes.NewReader(frameWithoutHMAC)), sharedSecret)
 // err == errMissingHMAC (no 0x06 HMAC tag present in stream)
 func TestReader_ReadAndVerify_Ugly(t *testing.T) {
 	frameWithoutHMAC := []byte{