diff --git a/src/Mail.hs b/src/Mail.hs
index 1d803d5f6..0275c1ac2 100644
--- a/src/Mail.hs
+++ b/src/Mail.hs
@@ -21,7 +21,6 @@ module Mail
     -- * YesodMail
   , YesodMail(..)
     -- * Monadically constructing Mail
-  , MonadState(..)
   , PrioritisedAlternatives
   , ToMailPart(..)
   , addAlternatives, provideAlternative, providePreferredAlternative