diff --git a/pkgs/misc/nix/unstable.nix b/pkgs/misc/nix/unstable.nix
index 6eb7998bf4c..6a41a7cbd2a 100644
--- a/pkgs/misc/nix/unstable.nix
+++ b/pkgs/misc/nix/unstable.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
   
   src = fetchurl {
     url = http://nix.cs.uu.nl/dist/nix/nix-0.11pre8133/nix-0.11pre8133.tar.bz2;
-    md5 = "33c28fcd97d5ae64e9219897b36cc6e4)";
+    md5 = "33c28fcd97d5ae64e9219897b36cc6e4";
   };
   
   buildInputs = [perl curl openssl];