diff --git a/include/wx/persist.h b/include/wx/persist.h
index 24cd503142..392bf53d9b 100644
--- a/include/wx/persist.h
+++ b/include/wx/persist.h
@@ -77,7 +77,7 @@ public:
     // deletes the associated wxPersistentObject
     void Unregister(void *obj);
 
-    
+
     // save/restore the state of an object
     //
     // these methods do nothing if DisableSaving/Restoring() was called
@@ -136,6 +136,10 @@ private:
         m_doRestore = true;
     }
 
+    // trivial but virtual dtor
+    virtual ~wxPersistenceManager();
+
+
     // helpers of Save/Restore()
     //
     // TODO: make this customizable by allowing
@@ -230,7 +234,7 @@ inline bool wxPersistentRegisterAndRestore(T *obj)
     wxPersistentObject * const pers = wxCreatePersistentObject(obj);
 
     return wxPersistenceManager::Get().RegisterAndRestore(obj, pers);
-                                            
+
 }
 
 #endif // _WX_PERSIST_H_
diff --git a/src/common/persist.cpp b/src/common/persist.cpp
index 52c4513924..76ab2698bd 100644
--- a/src/common/persist.cpp
+++ b/src/common/persist.cpp
@@ -40,6 +40,10 @@ wxPersistenceManager& wxPersistenceManager::Get()
     return s_manager;
 }
 
+wxPersistenceManager::~wxPersistenceManager()
+{
+}
+
 wxString
 wxPersistenceManager::GetKey(const wxPersistentObject& who,
                              const wxString& name) const