diff --git a/artiq/examples/no_hardware/repository/custom_applet.py b/artiq/examples/no_hardware/repository/custom_applet.py
index 1f197ffbb..0bc124325 100644
--- a/artiq/examples/no_hardware/repository/custom_applet.py
+++ b/artiq/examples/no_hardware/repository/custom_applet.py
@@ -4,13 +4,13 @@ from artiq.applets.simple import SimpleApplet
 
 
 class DemoWidget(QtWidgets.QLabel):
-    def __init__(self, args):
+    def __init__(self, args, ctl):
         QtWidgets.QLabel.__init__(self)
         self.dataset_name = args.dataset
 
-    def data_changed(self, data, mods):
+    def data_changed(self, value, metadata, persist, mods):
         try:
-            n = str(data[self.dataset_name][1])
+            n = str(value[self.dataset_name])
         except (KeyError, ValueError, TypeError):
             n = "---"
         n = "<font size=15>" + n + "</font>"