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-rw-r--r--pkgs/development/ocaml-modules/ppx_tools/default.nix2
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 2aa74d751db..262c621a94a 100644
--- a/pkgs/development/ocaml-modules/ppx_tools/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_tools/default.nix
@@ -20,7 +20,7 @@ let param = {
   "4.07" = {
     version = "5.1+4.06.0";
     sha256 = "1ww4cspdpgjjsgiv71s0im5yjkr3544x96wsq1vpdacq7dr7zwiw"; };
-}."${ocaml.meta.branch}";
+}.${ocaml.meta.branch};
 in
   stdenv.mkDerivation {
     name = "ocaml${ocaml.version}-ppx_tools-${param.version}";