diff --git a/src/crewai/agent.py b/src/crewai/agent.py
index 8b55513d2..b7f0b2896 100644
--- a/src/crewai/agent.py
+++ b/src/crewai/agent.py
@@ -142,7 +142,8 @@ class Agent(BaseAgent):
         self.agent_ops_agent_name = self.role
 
         self.llm = create_llm(self.llm)
-        self.function_calling_llm = create_llm(self.function_calling_llm)
+        if self.function_calling_llm and not isinstance(self.function_calling_llm, LLM):
+            self.function_calling_llm = create_llm(self.function_calling_llm)
 
         if not self.agent_executor:
             self._setup_agent_executor()
diff --git a/src/crewai/crew.py b/src/crewai/crew.py
index 5df5f59d7..b2857d827 100644
--- a/src/crewai/crew.py
+++ b/src/crewai/crew.py
@@ -246,7 +246,7 @@ class Crew(BaseModel):
         if self.output_log_file:
             self._file_handler = FileHandler(self.output_log_file)
         self._rpm_controller = RPMController(max_rpm=self.max_rpm, logger=self._logger)
-        if self.function_calling_llm:
+        if self.function_calling_llm and not isinstance(self.function_calling_llm, LLM):
             self.function_calling_llm = create_llm(self.function_calling_llm)
 
         self._telemetry = Telemetry()