diff --git a/modules/gui.nix b/modules/gui.nix
index f125cfc..ac2438a 100644
--- a/modules/gui.nix
+++ b/modules/gui.nix
@@ -61,6 +61,7 @@
   services.redshift = {
     package = pkgs.gammastep;
     enable = true;
+    executable = "/bin/gammastep";
     temperature = {
       day = 6500;
       night = 5300;