diff --git a/esphome/automation.py b/esphome/automation.py
index c9a476622e4..0958e862a8d 100644
--- a/esphome/automation.py
+++ b/esphome/automation.py
@@ -700,9 +700,5 @@ async def build_callback_automation(
     # one operator() per forwarder type; different automation pointers are just
     # data in the struct.
     if forwarder is None:
-        forwarder = (
-            TriggerForwarder.template(templ)
-            if arg_types
-            else TriggerForwarder.template()
-        )
+        forwarder = TriggerForwarder.template(templ)
     cg.add(getattr(parent, callback_method)(cg.RawExpression(f"{forwarder}{{{obj}}}")))
diff --git a/esphome/core/automation.h b/esphome/core/automation.h
index 28eae4e8f07..35f9e9bf387 100644
--- a/esphome/core/automation.h
+++ b/esphome/core/automation.h
@@ -470,6 +470,7 @@ template<typename... Ts> class ActionList {
 
 template<typename... Ts> class Automation {
  public:
+  /// Default constructor for use with TriggerForwarder (no Trigger object needed).
   Automation() = default;
   explicit Automation(Trigger<Ts...> *trigger) { trigger->set_automation_parent(this); }