diff --git a/myagents/commands/ollama.py b/myagents/commands/ollama.py
index a6ff152..1074760 100644
--- a/myagents/commands/ollama.py
+++ b/myagents/commands/ollama.py
@@ -37,7 +37,7 @@ from myagents.ollama_adapter import listen_url
 
 console = Console()
 
-_UID = os.getuid()
+_UID = os.getuid() if hasattr(os, "getuid") else None  # POSIX-only; launchctl paths are macOS
 _LOG_DIR = Path.home() / ".xiaohe" / "logs"