diff --git a/pkgs/build-support/cabal/default.nix b/pkgs/build-support/cabal/default.nix
index bc73d1f73a2b..bb349b3a1f57 100644
--- a/pkgs/build-support/cabal/default.nix
+++ b/pkgs/build-support/cabal/default.nix
@@ -82,9 +82,7 @@ assert !enableStaticLibraries -> versionOlder "7.7" ghc.version;
             # the default download location for Cabal packages is Hackage,
             # you still have to specify the checksum
             src = fetchurl {
-              # cannot use mirrors system because of subtly different directory structures
-              urls = ["http://hackage.haskell.org/packages/archive/${self.pname}/${self.version}/${self.fname}.tar.gz"
-                      "http://hdiff.luite.com/packages/archive/${self.pname}/${self.fname}.tar.gz"];
+              url = "mirror://hackage/${self.pname}/${self.fname}.tar.gz";
               inherit (self) sha256;
             };