diff --git a/Crypto/Cipher/Types.hs b/Crypto/Cipher/Types.hs
index 7486b06..d0cad63 100644
--- a/Crypto/Cipher/Types.hs
+++ b/Crypto/Cipher/Types.hs
@@ -18,7 +18,6 @@ module Crypto.Cipher.Types
     , DataUnitOffset
     , KeySizeSpecifier(..)
     , AEAD(..)
-    , AEADState(..)
     , AEADMode(..)
     , AEADModeImpl(..)
     -- , cfb8Encrypt