diff --git a/lib/options.nix b/lib/options.nix
index db48a242..1d57ac3b 100644
--- a/lib/options.nix
+++ b/lib/options.nix
@@ -352,7 +352,7 @@ rec {
           {
             foo_bar = 42;
             hostname = "localhost:8080";
-            callback.__raw = ''
+            callback = lib.nixvim.nestedLiteralLua ''
               function()
                 print('nixvim')
               end