diff --git a/Control/AthenaServices/src/AthenaSummarySvc.h b/Control/AthenaServices/src/AthenaSummarySvc.h
index 2f143a33096092007198cacf4c85c636b2578610..08f2571ef502b9c136cdcab2c55293ce87f15548 100644
--- a/Control/AthenaServices/src/AthenaSummarySvc.h
+++ b/Control/AthenaServices/src/AthenaSummarySvc.h
@@ -53,7 +53,7 @@ private:
 
   void createDict(std::ofstream& );
   void createASCII(std::ofstream& );
-  void handle(const Incident &inc);
+  virtual void handle(const Incident &inc) override;
   static void newHandler();
 
   // properties