diff --git a/overload.cabal b/overload.cabal
--- a/overload.cabal
+++ b/overload.cabal
@@ -1,5 +1,5 @@
 name:                overload
-version:             0.1.0.1
+version:             0.1.0.2
 synopsis:            Finite overloading
 description:         Provides a mechanism for finite overloading
 homepage:            https://gitlab.com/LukaHorvat/overload
@@ -23,7 +23,6 @@
   build-depends:       base >= 4.7 && < 5
                      , template-haskell
                      , simple-effects
-                     , containers
                      , th-expand-syns
   default-language:    Haskell2010
   ghc-options:         -Wall
diff --git a/src/Overload.hs b/src/Overload.hs
--- a/src/Overload.hs
+++ b/src/Overload.hs
@@ -93,7 +93,7 @@
 overload :: String -> [Name] -> Q [Dec]
 overload functionName overloadNames = do
     infos <- mapM reify overloadNames
-    overloads <- sequence [(n,) <$> expandSyns t | VarI n t _ <- infos]
+    overloads <- sequence [(n,) <$> expandSynsWith noWarnTypeFamilies t | VarI n t _ <- infos]
     let className = toUpper (head functionName) : tail functionName
         classDec = ClassD [] (mkName className) [PlainTV (mkName "t")] []
                           [SigD (mkName functionName) (VarT (mkName "t"))]
diff --git a/src/Overload/Diff.hs b/src/Overload/Diff.hs
--- a/src/Overload/Diff.hs
+++ b/src/Overload/Diff.hs
@@ -1,10 +1,7 @@
 {-# LANGUAGE LambdaCase #-}
 module Overload.Diff where
 
-import qualified Data.Set as Set
-import Data.List (foldl1')
 import Data.Either (partitionEithers)
-import Debug.Trace
 
 import Overload.TypeTree