diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0c677126d45..5f4ecbd1676 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5052,6 +5052,7 @@ with pkgs;
     interactive = stdenv.isCygwin; # patch for cygwin requires readline support
   });
 
+  # WARNING: this attribute is used by nix-shell so it shouldn't be removed/renamed
   bashInteractive = appendToName "interactive" (callPackage ../shells/bash/4.4.nix {
     interactive = true;
   });