diff --git a/pkg/ueps/packet.go b/pkg/ueps/packet.go
index 32a6762..4e5eb2d 100644
--- a/pkg/ueps/packet.go
+++ b/pkg/ueps/packet.go
@@ -14,7 +14,7 @@ var errTLVValueTooLarge = packetError("TLV value too large for 1-byte length hea
 
 type packetError string
 
-func (e packetError) Error() string { return string(e) }
+func (packetErr packetError) Error() string { return string(packetErr) }
 
 // writeTLV(buffer, TagVersion, []byte{0x09}); writeTLV(buffer, TagHMAC, hmacSignature); buffer.WriteByte(TagPayload)
 const (