diff --git a/pkgs/development/php-packages/phpmd/default.nix b/pkgs/development/php-packages/phpmd/default.nix
index bf6979f88eae..764d56475c42 100644
--- a/pkgs/development/php-packages/phpmd/default.nix
+++ b/pkgs/development/php-packages/phpmd/default.nix
@@ -11,7 +11,8 @@ mkDerivation {
     sha256 = "1i8qgzxniw5d8zjpypalm384y7qfczapfq70xmg129laq6xiqlqb";
   };
 
-  phases = [ "installPhase" ];
+  dontUnpack = true;
+
   nativeBuildInputs = [ makeWrapper ];
 
   installPhase = ''