diff --git a/modules/programs/anyrun.nix b/modules/programs/anyrun.nix
index 030f6078..2d00cf53 100644
--- a/modules/programs/anyrun.nix
+++ b/modules/programs/anyrun.nix
@@ -185,7 +185,7 @@ in
 
     extraCss = mkOption {
       type = nullOr lines;
-      default = "";
+      default = null;
       description = ''
         Extra CSS lines to add to {file}`~/.config/anyrun/style.css`.
       '';