diff --git a/pkgs/development/interpreters/clojure/clooj.nix b/pkgs/development/interpreters/clojure/clooj.nix
index 1809f9fd2dc0..810d783d4fb5 100644
--- a/pkgs/development/interpreters/clojure/clooj.nix
+++ b/pkgs/development/interpreters/clojure/clooj.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ makeWrapper ];
 
-  phases = "installPhase";
+  dontUnpack = true;
 
   installPhase = ''
     mkdir -p $out/share/java