1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/ocaml-modules/ppx_tools/default.nix b/pkgs/development/ocaml-modules/ppx_tools/default.nix
index a8fb4af2a6bb..60b730e06403 100644
--- a/pkgs/development/ocaml-modules/ppx_tools/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_tools/default.nix
@@ -23,7 +23,7 @@ let param = {
   "4.08" = {
     version = "5.3+4.08.0";
     sha256 = "0vdmhs3hpmh5iclx4lzgdpf362m4l35zprxs73r84z1yhr4jcr4m"; };
-}."${ocaml.meta.branch}";
+}.${ocaml.meta.branch};
 in
   stdenv.mkDerivation {
     name = "ocaml${ocaml.version}-ppx_tools-${param.version}";