diff --git a/chatmastermind/ai_factory.py b/chatmastermind/ai_factory.py
index a3cf9c3..36a987b 100644
--- a/chatmastermind/ai_factory.py
+++ b/chatmastermind/ai_factory.py
@@ -17,7 +17,7 @@ def create_ai(args: argparse.Namespace, config: Config) -> AI:  # noqa: 11
     is not found, it uses the first AI in the list.
     """
     ai_conf: AIConfig
-    if 'AI' in args and args.AI:
+    if hasattr(args, 'AI') and args.AI:
         try:
             ai_conf = config.ais[args.AI]
         except KeyError:
@@ -32,11 +32,11 @@ def create_ai(args: argparse.Namespace, config: Config) -> AI:  # noqa: 11
 
     if ai_conf.name == 'openai':
         ai = OpenAI(cast(OpenAIConfig, ai_conf))
-        if 'model' in args and args.model:
+        if hasattr(args, 'model') and args.model:
             ai.config.model = args.model
-        if 'max_tokens' in args and args.max_tokens:
+        if hasattr(args, 'max_tokens') and args.max_tokens:
             ai.config.max_tokens = args.max_tokens
-        if 'temperature' in args and args.temperature:
+        if hasattr(args, 'temperature') and args.temperature:
             ai.config.temperature = args.temperature
         return ai
     else: