diff --git a/pkgs/by-name/ls/lswt/package.nix b/pkgs/by-name/ls/lswt/package.nix
index 1bd9c04df8f3..d69a7b509f43 100644
--- a/pkgs/by-name/ls/lswt/package.nix
+++ b/pkgs/by-name/ls/lswt/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromSourcehut,
+  fetchpatch,
   wayland-scanner,
   wayland,
 }:
@@ -17,6 +18,14 @@ stdenv.mkDerivation rec {
     hash = "sha256-8jP6I2zsDt57STtuq4F9mcsckrjvaCE5lavqKTjhNT0=";
   };
 
+  patches = [
+    # Subject: [PATCH] fix JSON formatting of identifier string
+    (fetchpatch {
+      url = "https://git.sr.ht/~leon_plickat/lswt/commit/d35786da4383388c19f5437128fd393a6f16f74f.patch";
+      hash = "sha256-3RTq8BXRR7MgKV0BueoOjPORMrYVAKNbKR74hZ75W/Y=";
+    })
+  ];
+
   nativeBuildInputs = [ wayland-scanner ];
   buildInputs = [ wayland ];