diff --git a/astrbot/core/provider/sources/gemini_source.py b/astrbot/core/provider/sources/gemini_source.py
index ac37e98..522a191 100644
--- a/astrbot/core/provider/sources/gemini_source.py
+++ b/astrbot/core/provider/sources/gemini_source.py
@@ -130,6 +130,8 @@ async def _query(self, payloads: dict, tools: FuncCall) -> LLMResponse:
         tool = None
         if tools:
             tool = tools.get_func_desc_google_genai_style()
+            if not tool:
+                tool = None
         
         system_instruction = ""
         for message in payloads["messages"]:
diff --git a/astrbot/core/provider/sources/llmtuner_source.py b/astrbot/core/provider/sources/llmtuner_source.py
index 743999f..7ac718a 100644
--- a/astrbot/core/provider/sources/llmtuner_source.py
+++ b/astrbot/core/provider/sources/llmtuner_source.py
@@ -83,7 +83,9 @@ async def text_chat(
             "system": system_prompt,
         }
         if func_tool:
-            conf["tools"] = func_tool
+            tool_list = func_tool.get_func_desc_openai_style()
+            if tool_list:
+                conf['tools'] = tool_list
 
         responses = await self.model.achat(**conf)
 
diff --git a/astrbot/core/provider/sources/openai_source.py b/astrbot/core/provider/sources/openai_source.py
index 7e601e9..c679579 100644
--- a/astrbot/core/provider/sources/openai_source.py
+++ b/astrbot/core/provider/sources/openai_source.py
@@ -99,7 +99,9 @@ async def pop_record(self, session_id: str, pop_system_prompt: bool = False):
     
     async def _query(self, payloads: dict, tools: FuncCall) -> LLMResponse:
         if tools:
-            payloads["tools"] = tools.get_func_desc_openai_style()
+            tool_list = tools.get_func_desc_openai_style()
+            if tool_list:
+                payloads['tools'] = tool_list
         
         completion = await self.client.chat.completions.create(
             **payloads,