diff --git a/src/Control/Abstract/Value.hs b/src/Control/Abstract/Value.hs
index 322e1b15a..ec17da27f 100644
--- a/src/Control/Abstract/Value.hs
+++ b/src/Control/Abstract/Value.hs
@@ -1,17 +1,18 @@
-{-# LANGUAGE MultiParamTypeClasses, Rank2Types, TypeFamilies, TypeOperators, UndecidableInstances, GADTs, StandaloneDeriving #-}
+{-# LANGUAGE GADTs, MultiParamTypeClasses, Rank2Types, StandaloneDeriving, TypeFamilies, TypeOperators,
+             UndecidableInstances #-}
 module Control.Abstract.Value where
 
-import Control.Abstract.Addressable
-import Control.Abstract.Analysis
+import           Control.Abstract.Addressable
+import           Control.Abstract.Analysis
 import qualified Data.Abstract.Environment as Env
-import Data.Abstract.FreeVariables
-import Data.Abstract.Number as Number
-import Data.Abstract.Type as Type
-import Data.Abstract.Value as Value
-import Data.Scientific (Scientific)
+import           Data.Abstract.FreeVariables
+import           Data.Abstract.Number as Number
+import           Data.Abstract.Type as Type
+import           Data.Abstract.Value as Value
+import           Data.Scientific (Scientific)
 import qualified Data.Set as Set
-import Prelude hiding (fail)
-import Prologue
+import           Prelude hiding (fail)
+import           Prologue
 
 -- | This datum is passed into liftComparison to handle the fact that Ruby and PHP
 --   have built-in generalized-comparison ("spaceship") operators. If you want to
@@ -142,6 +143,11 @@ data ValueExc v where
   ValueExc :: Prelude.String -> ValueExc Value
   StringExc :: Prelude.String -> ValueExc ByteString
 
+instance Eq1 ValueExc where
+  liftEq _ (ValueExc a) (ValueExc b)   = a == b
+  liftEq _ (StringExc a) (StringExc b) = a == b
+  liftEq _ _ _                         = False
+
 deriving instance Show (ValueExc v)
 instance Show1 ValueExc where
   liftShowsPrec _ _ = showsPrec
diff --git a/src/Data/Abstract/Evaluatable.hs b/src/Data/Abstract/Evaluatable.hs
index 5d5cb9701..5dbd0a465 100644
--- a/src/Data/Abstract/Evaluatable.hs
+++ b/src/Data/Abstract/Evaluatable.hs
@@ -24,6 +24,9 @@ import Prologue
 data Unspecialized a b where
   Unspecialized :: { getUnspecialized :: Prelude.String } -> Unspecialized value value
 
+instance Eq1 (Unspecialized a) where
+  liftEq _ (Unspecialized a) (Unspecialized b) = a == b
+
 deriving instance Eq (Unspecialized a b)
 deriving instance Show (Unspecialized a b)
 instance Show1 (Unspecialized a) where
diff --git a/test/Analysis/Python/Spec.hs b/test/Analysis/Python/Spec.hs
index ab0c92f6c..350462f27 100644
--- a/test/Analysis/Python/Spec.hs
+++ b/test/Analysis/Python/Spec.hs
@@ -36,11 +36,11 @@ spec = parallel $ do
 
     it "subclasses" $ do
       res <- evaluate' "subclass.py"
-      join (fst res) `shouldBe` Right (injValue (String "\"bar\""))
+      fst res `shouldBe` Right (Right (Right (injValue (String "\"bar\""))))
 
     it "handles multiple inheritance left-to-right" $ do
       res <- evaluate' "multiple_inheritance.py"
-      join (fst res) `shouldBe` Right (injValue (String "\"foo!\""))
+      fst res `shouldBe`  Right (Right (Right (injValue (String "\"foo!\""))))
 
   where
     addr = Address . Precise
diff --git a/test/Analysis/Ruby/Spec.hs b/test/Analysis/Ruby/Spec.hs
index 8bdee6c28..8d2497d7d 100644
--- a/test/Analysis/Ruby/Spec.hs
+++ b/test/Analysis/Ruby/Spec.hs
@@ -28,7 +28,7 @@ spec = parallel $ do
 
     it "subclass" $ do
       res <- evaluate' "subclass.rb"
-      join (fst res) `shouldBe` Right (injValue (String "\"<bar>\""))
+      fst res `shouldBe` Right (Right (Right (injValue (String "\"<bar>\""))))
 
   where
     addr = Address . Precise