diff --git a/nix/base-system/darwin-configuration.nix b/nix/base-system/darwin-configuration.nix
index eb5d1d7..cd57f83 100644
--- a/nix/base-system/darwin-configuration.nix
+++ b/nix/base-system/darwin-configuration.nix
@@ -202,7 +202,7 @@
                 inputs = [
                     "durnitisp"
                 ];
-                source = "_msg = strip_ansi_escape_codes(_msg)";
+                source = ".message = strip_ansi_escape_codes(.message)";
             };
         };
         sinks = {