diff --git a/lib/bech32/test/Codec/Binary/Bech32Spec.hs b/lib/bech32/test/Codec/Binary/Bech32Spec.hs
index 270291bedef..b080c237a66 100644
--- a/lib/bech32/test/Codec/Binary/Bech32Spec.hs
+++ b/lib/bech32/test/Codec/Binary/Bech32Spec.hs
@@ -5,8 +5,6 @@
 
 module Codec.Binary.Bech32Spec
     ( spec
-    , ValidBech32Char (..)
-    , ValidBech32String (..)
     ) where
 
 import Prelude