diff --git a/nixos/modules/services/networking/nsd.nix b/nixos/modules/services/networking/nsd.nix
index 344396638a6..429580e5c6c 100644
--- a/nixos/modules/services/networking/nsd.nix
+++ b/nixos/modules/services/networking/nsd.nix
@@ -244,7 +244,7 @@ let
       };
 
       data = mkOption {
-        type = types.str;
+        type = types.lines;
         default = "";
         example = "";
         description = ''
@@ -484,7 +484,7 @@ in
     };
 
     extraConfig = mkOption {
-      type = types.str;
+      type = types.lines;
       default = "";
       description = ''
         Extra nsd config.