diff --git a/pkgs/by-name/la/lammps/package.nix b/pkgs/by-name/la/lammps/package.nix
index 40ed6f08f348..0c6f9b7fcbec 100644
--- a/pkgs/by-name/la/lammps/package.nix
+++ b/pkgs/by-name/la/lammps/package.nix
@@ -71,7 +71,9 @@ stdenv.mkDerivation (finalAttrs: {
     # GPU_API=cuda, and it doesn't users that don't enable the GPU package.
     autoAddDriverRunpath
   ]
-  ++ lib.optionals packages.PYTHON [ python3 ];
+  ++ lib.optionals packages.PYTHON [
+    python3
+  ];
 
   passthru = {
     inherit packages;