diff --git a/pkgs/top-level/haskell-defaults.nix b/pkgs/top-level/haskell-defaults.nix
index 10b0347127e..371ee72bd1f 100644
--- a/pkgs/top-level/haskell-defaults.nix
+++ b/pkgs/top-level/haskell-defaults.nix
@@ -18,35 +18,30 @@
   ghcHEADPrefs =
     self : self.haskellPlatformArgs_future self // {
       haskellPlatform = null;
-      binary = null; # now a core package
       extensibleExceptions = self.extensibleExceptions_0_1_1_4;
     };
 
   ghc763Prefs =
     self : self.haskellPlatformArgs_2013_2_0_0 self // {
       haskellPlatform = self.haskellPlatform_2013_2_0_0;
-      binary = null; # now a core package
       extensibleExceptions = self.extensibleExceptions_0_1_1_4;
     };
 
   ghc742Prefs =
     self : self.haskellPlatformArgs_2012_4_0_0 self // {
       haskellPlatform = self.haskellPlatform_2012_4_0_0;
-      binary = null; # now a core package
       cabalInstall_1_16_0_2 = self.cabalInstall_1_16_0_2.override { Cabal = self.Cabal_1_16_0_3; };
     };
 
   ghc741Prefs =
     self : self.haskellPlatformArgs_2012_2_0_0 self // {
       haskellPlatform = self.haskellPlatform_2012_2_0_0;
-      binary = null; # now a core package
       cabalInstall_1_16_0_2 = self.cabalInstall_1_16_0_2.override { Cabal = self.Cabal_1_16_0_3; };
     };
 
   ghc722Prefs =
     self : self.haskellPlatformArgs_2012_2_0_0 self // {
       haskellPlatform = self.haskellPlatform_2012_2_0_0;
-      binary = null; # a core package
       deepseq = self.deepseq_1_3_0_1;
       cabalInstall_1_16_0_2 = self.cabalInstall_1_16_0_2.override { Cabal = self.Cabal_1_16_0_3; };
     };
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 988ec9a53a6..252bef7d6d8 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -589,8 +589,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   bimap = callPackage ../development/libraries/haskell/bimap {};
 
-  binary_hackage = callPackage ../development/libraries/haskell/binary {};
-  binary = self.binary_hackage; # core package since ghc-7.2.1
+  binary = callPackage ../development/libraries/haskell/binary {};
 
   binaryShared = callPackage ../development/libraries/haskell/binary-shared {};