diff --git a/dstat_interface/main.py b/dstat_interface/main.py
index 00df052e0363e8eddb66f0c625700828e0ec8008..93ebf3961053b44ec80f05bc6bbbd651bec344a5 100755
--- a/dstat_interface/main.py
+++ b/dstat_interface/main.py
@@ -511,7 +511,12 @@ class Main(object):
             self.startbutton.set_sensitive(False)
             self.stopbutton.set_sensitive(True)
             self.statusbar.remove_all(self.error_context_id)
-            
+
+            try:
+                del self.current_exp
+            except AttributeError:
+                pass
+
             self.current_exp = self.exp_window.setup_exp(parameters)
             
             plot_ui.replace_notebook_exp(