diff --git a/src/crewai/task.py b/src/crewai/task.py
index f250cc711..fa20cbeba 100644
--- a/src/crewai/task.py
+++ b/src/crewai/task.py
@@ -280,6 +280,11 @@ class Task(BaseModel):
                 context = f"Previous attempt failed validation: {guardrail_result.error}\nPlease try again."
                 return self._execute_core(agent, context, tools)
 
+            # Ensure result is not None before assignment
+            if guardrail_result.result is None:
+                raise Exception(
+                    f"Task guardrail returned None as result. This is not allowed."
+                )
             result = guardrail_result.result
 
         pydantic_output, json_output = self._export_output(result)
diff --git a/tests/test_task_guardrails.py b/tests/test_task_guardrails.py
index 3bbf57919..3d1f729c5 100644
--- a/tests/test_task_guardrails.py
+++ b/tests/test_task_guardrails.py
@@ -3,7 +3,6 @@
 import pytest
 from unittest.mock import Mock
 
-from crewai.agents.agent_builder.base_agent import BaseAgent
 from crewai.task import Task
 from crewai.tasks.task_output import TaskOutput