diff --git a/nixos/modules/services/x11/hardware/libinput.nix b/nixos/modules/services/x11/hardware/libinput.nix
index 58fe702d4969..a0a5e2656852 100644
--- a/nixos/modules/services/x11/hardware/libinput.nix
+++ b/nixos/modules/services/x11/hardware/libinput.nix
@@ -178,7 +178,7 @@ in {
       };
 
       additionalOptions = mkOption {
-        type = types.str;
+        type = types.lines;
         default = "";
         example =
         ''