diff --git a/src/Util.php b/src/Util.php
index <HASH>..<HASH> 100644
--- a/src/Util.php
+++ b/src/Util.php
@@ -160,14 +160,6 @@ final class Util
         // ORM = first L octets of T
         /** @var string $orm */
         $orm = Binary::safeSubstr($t, 0, $length);
-
-        // @codeCoverageIgnoreStart
-        if (!\is_string($orm)) {
-            throw new CannotPerformOperation(
-                'An unknown error has occurred'
-            );
-        }
-        // @codeCoverageIgnoreEnd
         return $orm;
     }
This check is actually not needed with constant_time_encoding v2+