diff --git a/sia/config.py b/sia/config.py
index 4c96187..011087b 100644
--- a/sia/config.py
+++ b/sia/config.py
@@ -188,7 +188,7 @@ class Config:
         parser.add_argument(
             '--qwq-enable',
             action='store_true',
-            default=self._parse_bool_env('SIA_QWQ_ENABLED', True),
+            default=self._parse_bool_env('SIA_QWQ_ENABLED', False),
             help='Enable QwQ LLM engine (env: SIA_QWQ_ENABLED)'
         )
         parser.add_argument(