diff --git a/modules/programs/waybar.nix b/modules/programs/waybar.nix
index 12002d546..6d06db778 100644
--- a/modules/programs/waybar.nix
+++ b/modules/programs/waybar.nix
@@ -212,7 +212,7 @@ in {
     };
 
     style = mkOption {
-      type = nullOr (either path str);
+      type = nullOr (either path lines);
       default = null;
       description = ''
         CSS style of the bar.