diff --git a/src/DeriveArbitrary.hs b/src/DeriveArbitrary.hs
index fc94945..6f2d77f 100644
--- a/src/DeriveArbitrary.hs
+++ b/src/DeriveArbitrary.hs
@@ -3,2 +3,3 @@
 {-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE CPP #-}
 module DeriveArbitrary (
@@ -39,2 +40,8 @@ import Data.List
 
+#if MIN_VERSION_template_haskell(2,11,0)
+#    define TH211MBKIND _maybe_kind
+#else
+#    define TH211MBKIND
+#endif
+
 -- | Build the arbitrary function with makeArbs
@@ -80,3 +87,3 @@ deriveArbitrary t = do
     case inf of
-        TyConI (DataD _ _ params constructors _) -> do
+        TyConI (DataD _ _ params TH211MBKIND constructors _) -> do
               let ns  = map varT $ paramNames params
@@ -111,3 +118,3 @@ deriveArbitrary t = do
                                  where go n = $(gos 'go 'n)|]
-        TyConI (NewtypeD _ _ params con _) -> do 
+        TyConI (NewtypeD _ _ params TH211MBKIND con _) -> do 
             let ns = map varT $ paramNames params
@@ -281,3 +288,3 @@ customG name = do
                 
-        TyConI (DataD _ _ params constructors _) ->
+        TyConI (DataD _ _ params TH211MBKIND constructors _) ->
             let fnm = mkName "prob_gen" -- "customGen_" ++ (map (\x -> if x == '.' then '_' else
diff --git a/src/DeriveFixable.hs b/src/DeriveFixable.hs
index ec8b8be..83593e6 100644
--- a/src/DeriveFixable.hs
+++ b/src/DeriveFixable.hs
@@ -1,2 +1,3 @@
 {-# Language TemplateHaskell, ConstraintKinds, FlexibleInstances, FlexibleContexts, IncoherentInstances, MultiParamTypeClasses #-}
+{-# Language CPP #-}
 
@@ -15,2 +16,8 @@ import Control.Monad.Trans.State
 
+#if MIN_VERSION_template_haskell(2,11,0)
+#    define TH211MBKIND _maybe_kind
+#else
+#    define TH211MBKIND
+#endif
+
 --The state is composed of identifiers
@@ -147,3 +154,3 @@ mkFix i v a t = do ti <- reify t
                    case ti of
-                      TyConI (DataD _ _ params tcons _) -> do
+                      TyConI (DataD _ _ params TH211MBKIND tcons _) -> do
                         let cstuff = map getStuff tcons
@@ -155,3 +162,3 @@ mkFix i v a t = do ti <- reify t
                         case ii of
-                          TyConI (DataD _ _ ip _ _) -> do
+                          TyConI (DataD _ _ ip TH211MBKIND _ _) -> do
                             let ivars = map (varT . getParName) ip
@@ -180,3 +187,3 @@ mkFix i v a t = do ti <- reify t
                                                             gg = $(mkFixBody matches) |]
-                          TyConI (NewtypeD _ _ ip _ _) -> do
+                          TyConI (NewtypeD _ _ ip TH211MBKIND _ _) -> do
                             let ivars = map (varT . getParName) ip
diff --git a/src/DeriveMutation.hs b/src/DeriveMutation.hs
index ae58345..7494c50 100644
--- a/src/DeriveMutation.hs
+++ b/src/DeriveMutation.hs
@@ -3,2 +3,3 @@
 {-# LANGUAGE FlexibleInstances,UndecidableInstances#-}
+{-# LANGUAGE CPP #-}
 module DeriveMutation where
@@ -17,2 +18,9 @@ import Data.List
 import Megadeth.Prim
+
+#if MIN_VERSION_template_haskell(2,11,0)
+#    define TH211MBKIND _maybe_kind
+#else
+#    define TH211MBKIND
+#endif
+
 --import Mutation
@@ -100,3 +108,3 @@ devMutation name customGen = do
         TyConI (TySynD _ _ ty) -> return [] -- devMutation (headOf ty) Nothing
-        TyConI (DataD _ _ params constructors _) -> do
+        TyConI (DataD _ _ params TH211MBKIND constructors _) -> do
             let fnm = mkName $ "mutt" -- ++ (showName name)