diff --git a/pkgs/development/ocaml-modules/twt/default.nix b/pkgs/development/ocaml-modules/twt/default.nix
index 77635e8848e0..f9af4ab8ca05 100644
--- a/pkgs/development/ocaml-modules/twt/default.nix
+++ b/pkgs/development/ocaml-modules/twt/default.nix
@@ -10,10 +10,9 @@ stdenv.mkDerivation {
 
   buildInputs = [ ocaml findlib ];
 
-  createFindlibDestdir = true;
-
-  configurePhase = ''
-    mkdir $out/bin
+  preInstall = ''
+    mkdir -p $out/bin
+    mkdir -p $OCAMLFIND_DESTDIR
   '';
 
   dontBuild = true;