diff --git a/agent/component/base.py b/agent/component/base.py
index 4138ba9b4..eee28b442 100644
--- a/agent/component/base.py
+++ b/agent/component/base.py
@@ -396,6 +396,8 @@ class ComponentBase(ABC):
         )
 
     def __init__(self, canvas, id, param: ComponentParamBase):
+        from agent.canvas import Canvas  # Local import to avoid cyclic dependency
+        assert isinstance(canvas, Canvas), "canvas must be an instance of Canvas"
         self._canvas = canvas
         self._id = id
         self._param = param