diff --git a/metagpt/const.py b/metagpt/const.py
index 8c1460a02..9e7462da6 100644
--- a/metagpt/const.py
+++ b/metagpt/const.py
@@ -4,7 +4,7 @@
 @Time    : 2023/5/1 11:59
 @Author  : alexanderwu
 @File    : const.py'
-@Modified By: mashenquan, 2023/8/28. Add 'OPTIONS', 'DEFAULT_LANGUAGE', 'DEFAULT_MAX_TOKENS'
+@Modified By: mashenquan, 2023/8/28. Add 'OPTIONS', 'DEFAULT_LANGUAGE', 'DEFAULT_MAX_TOKENS'...
 """
 import contextvars
 from pathlib import Path
@@ -40,4 +40,7 @@ MEM_TTL = 24 * 30 * 3600
 
 OPTIONS = contextvars.ContextVar("OPTIONS")
 DEFAULT_LANGUAGE = "English"
-DEFAULT_MAX_TOKENS = 1500
\ No newline at end of file
+DEFAULT_MAX_TOKENS = 1500
+COMMAND_TOKENS = 500
+BRAIN_MEMORY = "BRAIN_MEMORY"
+SKILL_PATH = "SKILL_PATH"
\ No newline at end of file
diff --git a/metagpt/roles/assistant.py b/metagpt/roles/assistant.py
index c8a786b41..7d1517d7e 100644
--- a/metagpt/roles/assistant.py
+++ b/metagpt/roles/assistant.py
@@ -21,6 +21,7 @@ from metagpt.actions import ActionOutput
 from metagpt.actions.skill_action import SkillAction, ArgumentsParingAction
 from metagpt.actions.talk_action import TalkAction
 from metagpt.config import Config
+from metagpt.const import BRAIN_MEMORY, SKILL_PATH
 from metagpt.learn.skill_loader import SkillLoader
 from metagpt.logs import logger
 from metagpt.memory.brain_memory import BrainMemory, MessageType
@@ -28,11 +29,6 @@ from metagpt.provider.openai_api import CostManager
 from metagpt.roles import Role
 from metagpt.schema import Message
 
-DEFAULT_MAX_TOKENS = 1500
-COMMAND_TOKENS = 500
-BRAIN_MEMORY = "BRAIN_MEMORY"
-SKILL_PATH = "SKILL_PATH"
-
 
 class Assistant(Role):
     """Assistant for solving common issues."""