diff --git a/pkgs/llvm-ompss2/clang.nix b/pkgs/llvm-ompss2/clang.nix
index b05edad..2e3e02b 100644
--- a/pkgs/llvm-ompss2/clang.nix
+++ b/pkgs/llvm-ompss2/clang.nix
@@ -59,7 +59,7 @@ in stdenv.mkDerivation {
     inherit gcc zlib;
   };
 
-  buildInputs = [
+  nativeBuildInputs = [
     which
     bash
     python3
@@ -67,9 +67,13 @@ in stdenv.mkDerivation {
     cmake
     llvmPackages_latest.lld
     elfutils
-    libffi
     pkg-config
     zlib
+  ];
+
+  buildInputs = [
+    libffi
+    zlib
     gcc.cc.lib # Required for libstdc++.so.6
   ];