diff --git a/home/modules/fish.nix b/home/modules/fish.nix
index 626919b..cd4813e 100644
--- a/home/modules/fish.nix
+++ b/home/modules/fish.nix
@@ -11,7 +11,10 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    xdg.configFile."fish/completions/rustup.fish".text = lib.mkIf rust (builtins.readFile ../completions/rustup.fish);
+    xdg.configFile."fish/completions/rustup.fish" = {
+      enable = rust;
+      source = ../completions/rustup.fish;
+    };
 
     programs.bash = lib.mkIf (!macos) {
       enable = true;