diff --git a/GUI.py b/GUI.py
index 419ca00..ffd5078 100644
--- a/GUI.py
+++ b/GUI.py
@@ -45,9 +45,9 @@ class MainWindow(QWidget):
         # for i in range(5):
         #     self.add_list_item(f"Eintrag {i+1}", i+1, self.handle_start, self.handle_stop)
 
-    def add_list_item(self, text, index, btn1f, btn2f):
+    def add_list_item(self, text, index, on_start, on_stop):
         item = QListWidgetItem()
-        widget = ListItemWidget(text, index, btn1f, btn2f)
+        widget = ListItemWidget(text, index, on_start, on_stop)
         item.setSizeHint(widget.sizeHint())
         self.list_widget.addItem(item)
         self.list_widget.setItemWidget(item, widget)