diff --git a/hydra-tx/testlib/Test/Hydra/Tx/Gen.hs b/hydra-tx/testlib/Test/Hydra/Tx/Gen.hs
index 9b0af9a0ed9..1dbc42bae3b 100644
--- a/hydra-tx/testlib/Test/Hydra/Tx/Gen.hs
+++ b/hydra-tx/testlib/Test/Hydra/Tx/Gen.hs
@@ -282,9 +282,6 @@ shrinkValue :: Value -> [Value]
 shrinkValue =
   shrinkMapBy fromList toList shrinkListAggressively
 
-genBytes :: Gen ByteString
-genBytes = arbitrary
-
 genHash :: Gen ByteString
 genHash = BS.pack <$> vector 32