diff --git a/pkgs/applications/networking/browsers/nyxt/default.nix b/pkgs/applications/networking/browsers/nyxt/default.nix
index 0fb67d46bc09..6ff4976f00c8 100644
--- a/pkgs/applications/networking/browsers/nyxt/default.nix
+++ b/pkgs/applications/networking/browsers/nyxt/default.nix
@@ -39,14 +39,6 @@ stdenv.mkDerivation (finalAttrs: {
     stripRoot = false;
   };
 
-  # for sbcl 2.4.3
-  postPatch = ''
-    substituteInPlace _build/cl-gobject-introspection/src/init.lisp \
-       --replace-warn sb-ext::set-floating-point-modes sb-int:set-floating-point-modes
-    substituteInPlace _build/fset/Code/port.lisp \
-       --replace-warn sb-ext::once-only sb-int:once-only
-  '';
-
   nativeBuildInputs = [ wrapGAppsHook3 ];
 
   buildInputs = [