diff --git a/pkgs/development/tools/build-managers/gnustep/make/default.nix b/pkgs/development/tools/build-managers/gnustep/make/default.nix
index 67fe60f2c0e..f0217f15929 100644
--- a/pkgs/development/tools/build-managers/gnustep/make/default.nix
+++ b/pkgs/development/tools/build-managers/gnustep/make/default.nix
@@ -11,16 +11,13 @@ stdenv.mkDerivation rec {
 
   patchPhase = ''
     substituteInPlace GNUmakefile.in \
-      --replace which type \
-      --replace 'tooldir = $(DESTDIR)' 'tooldir = ' \
-      --replace 'makedir = $(DESTDIR)' 'makedir = ' \
-      --replace 'mandir  = $(DESTDIR)' 'mandir  = '
+      --replace which type
 
     substituteInPlace FilesystemLayouts/apple \
       --replace /usr/local ""
   '';
 
-  installFlags = "DESTDIR=$(out)";
+  installFlags = [ "PREFIX=$(out)" ];
 
   postInstall = ''
     mkdir -p $out/nix-support