diff --git a/src/main/python/macro_line.py b/src/main/python/macro_line.py
index 0d63986..134bc2c 100644
--- a/src/main/python/macro_line.py
+++ b/src/main/python/macro_line.py
@@ -78,6 +78,7 @@ class MacroLine(QObject):
         self.action = self.type_to_cls[self.select_type.currentIndex()](self.container)
         self.action.changed.connect(self.on_change)
         self.action.insert(self.row)
+        self.changed.emit()
 
     def on_remove_clicked(self):
         self.parent.on_remove(self)