diff --git a/src/SluSourceMonitor.py b/src/SluSourceMonitor.py
index 746714930010ca06eca830c4f8965e561df8230c..e9a37db1b33b90dd7b9eb36f12af02f051b1fa3c 100644
--- a/src/SluSourceMonitor.py
+++ b/src/SluSourceMonitor.py
@@ -2489,7 +2489,7 @@ class MainWindow(QDialog):
         os.system('firefox http://fcs-proxy-01.elettra.eu/egiga2m/egiga2m.html?conf=fermi &')
 
     def apricalendario(self):
-        os.system("python /home/lfo/runtime/panels/bin/slucalendarpanel.py &")
+        os.system("slu-calendar-gui &")
 
     def attenuatoresu(self):
         gol = sacco['attenuator'].Position + float(self.source_attenuatorcontrol.muoviS.text())