diff --git a/lib/systems/examples.nix b/lib/systems/examples.nix
index 654d6f69af01..f5cba8bcd63f 100644
--- a/lib/systems/examples.nix
+++ b/lib/systems/examples.nix
@@ -248,8 +248,7 @@ rec {
 
   # BSDs
 
-  # Deprecate
-  amd64-netbsd = x86_64-netbsd;
+  amd64-netbsd = lib.warn "The amd64-netbsd system example is deprecated. Use x86_64-netbsd instead." x86_64-netbsd;
 
   x86_64-netbsd = {
     config = "x86_64-unknown-netbsd";