diff --git a/client/src/docker/lib/internal/lib_docker.bash b/client/src/docker/lib/internal/lib_docker.bash
index d72f82e..8dc2218 100644
--- a/client/src/docker/lib/internal/lib_docker.bash
+++ b/client/src/docker/lib/internal/lib_docker.bash
@@ -2,7 +2,7 @@
 
 # docker-finance | modern accounting for the power-user
 #
-# Copyright (C) 2021-2025 Aaron Fiore (Founder, Evergreen Crypto LLC)
+# Copyright (C) 2021-2026 Aaron Fiore (Founder, Evergreen Crypto LLC)
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -278,7 +278,7 @@ function lib_docker::__build()
           _files+=("${_path}/Dockerfile.user.in")
           ;;
         *)
-          lib_utils::print_warning "'${global_arg_type}' is not supported for 'dev-tools', using 'default'"
+          lib_utils::die_fatal "'${global_arg_type}' is not supported for 'dev-tools', use 'default' instead"
           ;;
       esac
       ;;