--- omnetpp-5.2.1/src/nedxml/msgcppgenerator.cc	2017-12-22 19:59:27.543385600 +0100
+++ omnetpp-5.2.1/src/nedxml/msgcppgenerator.cc.override	2017-12-22 19:03:36.565725700 +0100
@@ -1139,7 +1139,7 @@
             H << "    virtual void " << it->setter << "(" << it->fsizetype << " k, " << it->argtype << " " << it->argname << ")" << pure << ";\n";
         }
         else {
-            H << "    virtual " << it->rettype << " " << it->getter << "()" << constifprimitivetype << "" << pure << ";\n";
+	     H << "    virtual " << it->rettype << " " << it->getter << "()" << constifprimitivetype << "" << pure << ((std::string(it->getter) == "getDisplayString") ? " override" : "")  << ";\n";	    
             if (isstruct)
                 H << "    virtual const " << it->rettype << " " << it->getter << "() const {return const_cast<" << info.msgclass << "*>(this)->" << it->getter << "();}\n";
             H << "    virtual void " << it->setter << "(" << it->argtype << " " << it->argname << ")" << pure << ";\n";