diff --git a/khaosz/core/tokenizer.py b/khaosz/core/tokenizer.py
index 1f0f1ed..65e06b4 100644
--- a/khaosz/core/tokenizer.py
+++ b/khaosz/core/tokenizer.py
@@ -109,3 +109,11 @@ class BpeTokenizer:
     @property
     def pad_id(self) -> int:
         return self._tokenizer.token_to_id("<pad>")
+    
+    @property
+    def user_id(self) -> int:
+        return self._tokenizer.token_to_id("<|user|>")
+    
+    @property
+    def system_id(self) -> int:
+        return self._tokenizer.token_to_id("<|system|>")
\ No newline at end of file
diff --git a/train.py b/train.py
index 64805d5..bf3dc16 100644
--- a/train.py
+++ b/train.py
@@ -51,7 +51,7 @@ def train(
         "multi_turn": multi_turn,
         "bos_token_id": parameter.tokenizer.bos_id,
         "eos_token_id": parameter.tokenizer.eos_id,
-        "user_token_id":parameter.tokenizer.encode("<|user|>")[0],
+        "user_token_id":parameter.tokenizer.user_id,
         "dpo_beta": dpo_beta
     }