diff --git a/src/Hex.php b/src/Hex.php
index c3413ec15e475bfe9643a1bfb750cd29b104b149..7bf60b7345ea6c4b62524b183278fd729f664ea7 100644
--- a/src/Hex.php
+++ b/src/Hex.php
@@ -142,7 +142,7 @@ abstract class Hex implements EncoderInterface
 
             if (($c_num0 | $c_alpha0) === 0) {
                 throw new \RangeException(
-                    'hexEncode() only expects hexadecimal characters'
+                    'Expected hexadecimal character'
                 );
             }
             /** @var int $c_val */