diff --git a/pkgs/games/atanks/default.nix b/pkgs/games/atanks/default.nix
index 88a9026e3bd..05b645ee326 100644
--- a/pkgs/games/atanks/default.nix
+++ b/pkgs/games/atanks/default.nix
@@ -11,10 +11,6 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ allegro ];
 
-  patchPhase = ''
-    substituteInPlace Makefile --replace /usr $out
-  '';
-
   makeFlags = [ "PREFIX=$(out)/" "INSTALL=install" "CXX=g++" ];
 
   meta = with stdenv.lib; {