diff --git a/flake.nix b/flake.nix
index c7d3566..6e40cfe 100644
--- a/flake.nix
+++ b/flake.nix
@@ -51,6 +51,8 @@
                 --replace '2 * build_ctx.indentation' '4 * build_ctx.indentation'
                 substituteInPlace src/alejandra/src/rules/string.rs \
                 --replace 'format!("  {}", line)' 'format!("    {}", line)'
+                substituteInPlace src/alejandra_cli/src/cli.rs \
+                --replace 'eprint!("{}", random_ad());' ""
                 rm -r src/alejandra/tests
             '';
         };