diff --git a/pkgs/servers/http/nix-binary-cache/default.nix b/pkgs/servers/http/nix-binary-cache/default.nix
index 5baba231026d..4f26610e10cf 100644
--- a/pkgs/servers/http/nix-binary-cache/default.nix
+++ b/pkgs/servers/http/nix-binary-cache/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation rec {
   version = "2014-06-29-1";
   pname = "nix-binary-cache";
 
-  phases = ["installPhase"];
+  dontUnpack = true;
 
   installPhase = ''
     mkdir -p "$out/bin"