diff --git a/pkgs/development/ocaml-modules/fmt/default.nix b/pkgs/development/ocaml-modules/fmt/default.nix
index 4816cab57cfd..bd5629816528 100644
--- a/pkgs/development/ocaml-modules/fmt/default.nix
+++ b/pkgs/development/ocaml-modules/fmt/default.nix
@@ -14,8 +14,8 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ ocaml findlib ocamlbuild topkg ];
-  buildInputs = [ topkg ];
-  propagatedBuildInputs = [ cmdliner seq stdlib-shims ];
+  buildInputs = [ cmdliner topkg ];
+  propagatedBuildInputs = [ seq stdlib-shims ];
 
   strictDeps = true;