diff --git a/beat/web/plotters/models.py b/beat/web/plotters/models.py
index 0396001a23124e48338d483f7b11c6806fed7d6e..2e5a9f8a9f92c7d8353b129e8c235f23675a3f3b 100755
--- a/beat/web/plotters/models.py
+++ b/beat/web/plotters/models.py
@@ -284,7 +284,7 @@ class PlotterParameter(Contribution):
 
     def deletable(self):
         """Can be deleted if nobody points at me"""
-        return super(PlotterParameter, self).deletable() and (self.defaults.count() == 0) and (self.sharing == Shareable.PRIVATE)
+        return super(PlotterParameter, self).deletable() and (self.defaults.count() == 0) and (self.sharing == Shareable.PRIVATE) and (len(self.reports.all()) == 0)
 
     #_____ Utilities __________