diff --git a/pkgs/by-name/op/opensp/package.nix b/pkgs/by-name/op/opensp/package.nix
index de0e48c4351e..4fba52c803f1 100644
--- a/pkgs/by-name/op/opensp/package.nix
+++ b/pkgs/by-name/op/opensp/package.nix
@@ -63,7 +63,10 @@ stdenv.mkDerivation (finalAttrs: {
   # Clang 16 fails to build due to inappropriate definitions in the `config.h` generated by the
   # existing configure scripts. Regenerate them to make sure they detect its features correctly.
   # autoconf269: as autoconf 2.73 is trying to force C23 (-std=gnu23) which will fail, we use 2.69.
-  ++ lib.optionals stdenv.cc.isClang [ autoconf269 autoreconfHook ]
+  ++ lib.optionals stdenv.cc.isClang [
+    autoconf269
+    autoreconfHook
+  ]
   ++ lib.optionals stdenv.hostPlatform.isCygwin [
     autoconf
     automake