diff --git a/pkgs/development/libraries/physics/hoppet/default.nix b/pkgs/development/libraries/physics/hoppet/default.nix
index 7ad5b9861a1d..af90192878d7 100644
--- a/pkgs/development/libraries/physics/hoppet/default.nix
+++ b/pkgs/development/libraries/physics/hoppet/default.nix
@@ -9,8 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "0j7437rh4xxbfzmkjr22ry34xm266gijzj6mvrq193fcsfzipzdz";
   };
 
-  buildInputs = [ gfortran ];
-  nativeBuildInputs = [ perl ];
+  nativeBuildInputs = [ perl gfortran  ];
 
   enableParallelBuilding = true;