diff --git a/src/include/assoc.cpp b/src/include/assoc.cpp
index 6d7b150d0..03c33a441 100755
--- a/src/include/assoc.cpp
+++ b/src/include/assoc.cpp
@@ -214,11 +214,11 @@ bool TAssoc_array::add(const char* key, const TObject& obj, bool force)
     o->_obj = obj.dup();
     return false;
   }
-  if (force) 
-  { 
-    if (o->_obj != NULL) 
-      delete o->_obj;
-    o->_obj = obj.dup(); 
+  if (force && o->_obj != &obj)	// Tolla 2017: Aggiunto controllo sugli indirizzi, perchè c'è questo problema?
+  {
+		if (o->_obj != NULL) 
+			delete o->_obj;
+		o->_obj = obj.dup(); 
   }
   return true;
 }