diff --git a/Generators/Herwig7_i/Herwig7_i/Herwig7.h b/Generators/Herwig7_i/Herwig7_i/Herwig7.h
index ed0d49dde6613b0b8367fdec5958e8596eb4663b..8ff8cc7a31e604ad234845fbf80188d514658423 100644
--- a/Generators/Herwig7_i/Herwig7_i/Herwig7.h
+++ b/Generators/Herwig7_i/Herwig7_i/Herwig7.h
@@ -76,9 +76,7 @@ public:
 
   /// Bail out and print usage information
   virtual void quitWithHelp() const {
-    std::cerr << "=================================\n";
-    std::cerr << "HERE I CAN PUT SOME ERROR MESSAGE\n";
-    std::cerr << "=================================\n";
+    ATH_MSG_ERROR("HERE I CAN PUT SOME ERROR MESSAGE")
     ThePEG::Repository::cleanup();
     exit( EXIT_FAILURE );
   }