diff --git a/LArCalorimeter/LArSamplesMon/LArSamplesMon/Averager.h b/LArCalorimeter/LArSamplesMon/LArSamplesMon/Averager.h
index 39bef826175ca0374b01e5a1ffc58109ef3ba9a4..c80fcd25c951b66e58d2bca8cb4063b672d0e16b 100644
--- a/LArCalorimeter/LArSamplesMon/LArSamplesMon/Averager.h
+++ b/LArCalorimeter/LArSamplesMon/LArSamplesMon/Averager.h
@@ -27,6 +27,7 @@ namespace LArSamples {
       /** @brief Constructor  */
       Averager(unsigned int n = 0);
       Averager(unsigned int lwb, unsigned int upb);
+      Averager(const Averager&) = default;
 
       virtual ~Averager() { }