diff --git a/servant-mock/servant-mock.cabal b/servant-mock/servant-mock.cabal
index 7d8589d0..af444527 100644
--- a/servant-mock/servant-mock.cabal
+++ b/servant-mock/servant-mock.cabal
@@ -18,8 +18,7 @@ cabal-version:       >=1.10
 
 flag example
   description: Build the example too
-  manual: True
-  default: False
+  default: True
 
 library
   exposed-modules:
diff --git a/servant-mock/src/Servant/Mock.hs b/servant-mock/src/Servant/Mock.hs
index e4437fba..7d17dca5 100644
--- a/servant-mock/src/Servant/Mock.hs
+++ b/servant-mock/src/Servant/Mock.hs
@@ -3,6 +3,7 @@
 {-# LANGUAGE FlexibleContexts    #-}
 {-# LANGUAGE FlexibleInstances   #-}
 {-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE PolyKinds           #-}
 {-# LANGUAGE TypeFamilies        #-}
 {-# LANGUAGE TypeOperators       #-}
 {-# OPTIONS_GHC -fno-warn-orphans #-}