diff --git a/metagpt/memory/memory.py b/metagpt/memory/memory.py
index f9dd5c1a3..bf9f0541c 100644
--- a/metagpt/memory/memory.py
+++ b/metagpt/memory/memory.py
@@ -8,6 +8,7 @@
 from collections import defaultdict
 from typing import Iterable, Type
 
+from metagpt.actions import Action
 from metagpt.schema import Message
 
 
@@ -16,8 +17,6 @@ class Memory:
 
     def __init__(self):
         """Initialize an empty storage list and an empty index dictionary"""
-        from metagpt.actions import Action
-
         self.storage: list[Message] = []
         self.index: dict[Type[Action], list[Message]] = defaultdict(list)
 
diff --git a/metagpt/provider/metagpt_llm_api.py b/metagpt/provider/metagpt_llm_api.py
index 3ae65a623..95514cf53 100644
--- a/metagpt/provider/metagpt_llm_api.py
+++ b/metagpt/provider/metagpt_llm_api.py
@@ -6,7 +6,6 @@
 @Desc    : MetaGPT LLM related APIs
 """
 
-from metagpt.memory.brain_memory import BrainMemory
 from metagpt.provider import OpenAIGPTAPI
 
 
@@ -16,7 +15,7 @@ class MetaGPTLLMAPI(OpenAIGPTAPI):
     def __init__(self):
         super().__init__()
 
-    async def get_summary(self, memory: BrainMemory, max_words=200, keep_language: bool = False, **kwargs) -> str:
+    async def get_summary(self, memory, max_words=200, keep_language: bool = False, **kwargs) -> str:
         """
         Return string in the following format：
         [