diff --git a/src/Model/Types/Mail.hs b/src/Model/Types/Mail.hs
index 463737ce9..be993e10b 100644
--- a/src/Model/Types/Mail.hs
+++ b/src/Model/Types/Mail.hs
@@ -18,7 +18,7 @@ import qualified Data.Aeson.Types as Aeson
 import qualified Data.HashSet as HashSet
 import qualified Data.HashMap.Strict as HashMap
 
-import Crypto.Hash (digestFromByteString, SHAKE256)
+import Crypto.Hash (digestFromByteString, SHAKE128)
 import Database.Persist.Sql (PersistFieldSql)
 
 import Data.ByteArray (ByteArrayAccess)