diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 57a73f5c1860..59b2bbe776b6 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1168,8 +1168,8 @@ mapAliases {
   openlp = throw "openlp has been removed for now because the outdated version depended on insecure and removed packages and it needs help to upgrade and maintain it; see https://github.com/NixOS/nixpkgs/pull/314882"; # Added 2024-07-29
   openmpt123 = throw "'openmpt123' has been renamed to/replaced by 'libopenmpt'"; # Converted to throw 2024-10-17
   openssl_3_0 = openssl_3; # Added 2022-06-27
-  opensycl = lib.warn "'opensycl' has been renamed to 'adaptivecpp'" adaptivecpp; # Added 2024-12-04
-  opensyclWithRocm = lib.warn "'opensyclWithRocm ' has been renamed to 'adaptivecppWithRocm '" adaptivecppWithRocm; # Added 2024-12-04
+  opensycl = lib.warnOnInstantiate "'opensycl' has been renamed to 'adaptivecpp'" adaptivecpp; # Added 2024-12-04
+  opensyclWithRocm = lib.warnOnInstantiate "'opensyclWithRocm' has been renamed to 'adaptivecppWithRocm'" adaptivecppWithRocm; # Added 2024-12-04
   orchis = throw "'orchis' has been renamed to/replaced by 'orchis-theme'"; # Converted to throw 2024-10-17
   onlyoffice-bin = onlyoffice-desktopeditors; # Added 2024-09-20
   onlyoffice-bin_latest = onlyoffice-bin; # Added 2024-07-03