--- nmap/nping/PacketElement.h

+++ nmap/nping/PacketElement.h

@@ -108,7 +108,7 @@ class PacketElement {

   public:

     PacketElement();

-    ~PacketElement();

+    virtual ~PacketElement();

     /** This function MUST be overwritten on ANY class that inherits from

       *  this one. Otherwise getBinaryBuffer will fail */