diff --git a/metagpt/tools/libs/editor.py b/metagpt/tools/libs/editor.py
index ab7b2efd6..9a1cf63c3 100644
--- a/metagpt/tools/libs/editor.py
+++ b/metagpt/tools/libs/editor.py
@@ -17,7 +17,7 @@ from pydantic import BaseModel, ConfigDict
 from metagpt.config2 import Config
 from metagpt.const import DEFAULT_WORKSPACE_ROOT
 from metagpt.logs import logger
-from metagpt.tools.libs.index_repo import OTHER_TYPE, IndexRepo
+from metagpt.tools.libs.index_repo import DEFAULT_MIN_TOKEN_COUNT, OTHER_TYPE, IndexRepo
 from metagpt.tools.libs.linter import Linter
 from metagpt.tools.tool_registry import register_tool
 from metagpt.utils import read_docx
@@ -956,7 +956,7 @@ class Editor(BaseModel):
 
     @staticmethod
     async def search_index_repo(
-        query: str, files_or_paths: List[Union[str, Path]], min_token_count: int = 0
+        query: str, files_or_paths: List[Union[str, Path]], min_token_count: int = DEFAULT_MIN_TOKEN_COUNT
     ) -> List[str]:
         """Searches the index repository for a given query across specified files or paths.
 
diff --git a/metagpt/tools/libs/index_repo.py b/metagpt/tools/libs/index_repo.py
index 9c1b0886a..b4907d74e 100644
--- a/metagpt/tools/libs/index_repo.py
+++ b/metagpt/tools/libs/index_repo.py
@@ -27,6 +27,9 @@ CHATS_INDEX_ROOT = "/data/.index/chats"
 CHATS_ROOT = "/data/chats/"
 OTHER_TYPE = "other"
 
+DEFAULT_MIN_TOKEN_COUNT = 10000
+DEFAULT_MAX_TOKEN_COUNT = 100000000
+
 
 class TextScore(BaseModel):
     filename: str
@@ -41,8 +44,8 @@ class IndexRepo(BaseModel):
     )
     fingerprint_filename: str = "fingerprint.json"
     model: Optional[str] = None
-    min_token_count: int = 10000
-    max_token_count: int = 100000000
+    min_token_count: int = DEFAULT_MIN_TOKEN_COUNT
+    max_token_count: int = DEFAULT_MAX_TOKEN_COUNT
     recall_count: int = 5
     embedding: Optional[BaseEmbedding] = Field(default=None, exclude=True)
     fingerprints: Dict[str, str] = Field(default_factory=dict)