diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+#### 0.1.1.1
+
+* Fix regression in implementation of `multipleConstructors` introduced in 0.1.1
+
 ### 0.1.1
 
 * Add `Generics.Generic.Aeson.Util` module with helper function for interoperating packages
diff --git a/generic-aeson.cabal b/generic-aeson.cabal
--- a/generic-aeson.cabal
+++ b/generic-aeson.cabal
@@ -1,5 +1,5 @@
 name:                generic-aeson
-version:             0.1.1
+version:             0.1.1.1
 synopsis:            Derivation of Aeson instances using GHC generics.
 description:         Derivation of Aeson instances using GHC generics.
 author:              Silk
diff --git a/src/Generics/Generic/Aeson/Util.hs b/src/Generics/Generic/Aeson/Util.hs
--- a/src/Generics/Generic/Aeson/Util.hs
+++ b/src/Generics/Generic/Aeson/Util.hs
@@ -17,7 +17,6 @@
 import Data.Maybe (fromMaybe)
 import Data.Text (Text)
 import GHC.Generics
-import Generics.Deriving.ConNames
 import qualified Data.Text as T
 
 import Generics.Generic.IsEnum
@@ -50,4 +49,4 @@
     Just (c, t) -> T.cons (toLower c) t
 
 multipleConstructors :: [a] -> Bool
-multipleConstructors = (> 1) . length . conNames
+multipleConstructors = (> 1) . length