diff --git a/flake.nix b/flake.nix
index 0a3f1815..2f0a67ab 100644
--- a/flake.nix
+++ b/flake.nix
@@ -29,7 +29,7 @@
   in {
     overlays.default = _: prev: rec {
       wlroots-hyprland = prev.wlroots.overrideAttrs (__: {
-        version = mkDate ((inputs.wlroots.lastModifiedDate or "19700101")) + "_" + (inputs.wlroots.shortRev or "dirty");
+        version = mkDate (inputs.wlroots.lastModifiedDate or "19700101") + "_" + (inputs.wlroots.shortRev or "dirty");
         src = inputs.wlroots;
       });