diff --git a/agent/component/base.py b/agent/component/base.py
index 54ccb6c3c..f03c5d107 100644
--- a/agent/component/base.py
+++ b/agent/component/base.py
@@ -466,7 +466,7 @@ class ComponentBase(ABC):
         outs = []
         for q in sources:
             if q.get("component_id"):
-                if q["component_id"].split("@")[0].lower().find("begin") >= 0:
+                if "@" in q["component_id"] and q["component_id"].split("@")[0].lower().find("begin") >= 0:
                     cpn_id, key = q["component_id"].split("@")
                     for p in self._canvas.get_component(cpn_id)["obj"]._param.query:
                         if p["key"] == key: