diff --git a/flake.nix b/flake.nix
index d70469f..5e83605 100644
--- a/flake.nix
+++ b/flake.nix
@@ -17,7 +17,7 @@
           zdwl = config.packages.default;
         };
         packages.default = pkgs.dwl.overrideAttrs (old: {
-          buildInputs = old.buildInputs ++ pkgs.fcft;
+          buildInputs = old.buildInputs ++ [ pkgs.fcft ];
           src = ./.;
         });
       };