diff --git a/mainwin.py b/mainwin.py
index 3a5de70..bec88c2 100644
--- a/mainwin.py
+++ b/mainwin.py
@@ -38,7 +38,7 @@ class MainWindow(QMainWindow):
         rst.server.register_function(self.new_plot)
         rst.server.register_function(self.append_data)
 
-        self.sig_make_new_plot.connect(self.make_new_plot)
+        self.sig_make_new_plot.connect(self.on_make_new_plot)
 
 
     def new_plot(self, name, cfg):
@@ -64,10 +64,10 @@ class MainWindow(QMainWindow):
                 self.mdi.setActiveSubWindow(sub)
                 return
 
-        self.make_new_plot(name, desc)
+        self.on_make_new_plot(name, desc)
 
 
-    def make_new_plot(self, *args, **kwargs):
+    def on_make_new_plot(self, *args, **kwargs):
         sub = MDISubPlot(*args, **kwargs)
         self.mdi.addSubWindow(sub)
         sub.show()