+diff --git a/lib/engine/account/bank-impl.h b/lib/engine/account/bank-impl.h
+index e16848e..b0a8775 100644
+--- a/lib/engine/account/bank-impl.h
++++ b/lib/engine/account/bank-impl.h
+@@ -203,7 +203,7 @@ template<typename AccountType>
+ void
+ Ekiga::BankImpl<AccountType>::add_account (boost::shared_ptr<AccountType> account)
+ {
+- add_object (account);
++ this->add_object (account);
+
+ account->questions.connect (boost::ref (questions));
+ }
+@@ -213,7 +213,7 @@ template<typename AccountType>
+ void
+ Ekiga::BankImpl<AccountType>::remove_account (boost::shared_ptr<AccountType> account)
+ {
+- remove_object (account);
++ this->remove_object (account);
+ }
+
+ #endif
+diff --git a/lib/engine/addressbook/book-impl.h b/lib/engine/addressbook/book-impl.h
+index 711d8d9..4fea7d5 100644
+--- a/lib/engine/addressbook/book-impl.h
++++ b/lib/engine/addressbook/book-impl.h
+@@ -204,7 +204,7 @@ void
+ Ekiga::BookImpl<ContactType>::add_contact (gmref_ptr<ContactType> contact)
+ {
+ contact->questions.add_handler (questions.make_slot ());
+- add_object (contact);
++ this->add_object (contact);
+ }
+
+
+@@ -212,7 +212,7 @@ template<typename ContactType>
+ void
+ Ekiga::BookImpl<ContactType>::remove_contact (gmref_ptr<ContactType> contact)
+ {
+- remove_object (contact);
++ this->remove_object (contact);
+ }
+
+ #endif
+diff --git a/lib/engine/addressbook/source-impl.h b/lib/engine/addressbook/source-impl.h
+index a30cd03..630236f 100644
+--- a/lib/engine/addressbook/source-impl.h
++++ b/lib/engine/addressbook/source-impl.h
+@@ -206,7 +206,7 @@ template<typename BookType>
+ void
+ Ekiga::SourceImpl<BookType>::add_book (boost::shared_ptr<BookType> book)
+ {
+- add_object (book);
++ this->add_object (book);
+
+ add_connection (book, book->contact_added.connect (boost::bind (boost::ref (contact_added), book, _1)));
+
+diff --git a/lib/engine/presence/cluster-impl.h b/lib/engine/presence/cluster-impl.h
+index 245a7c6..92074a8 100644
+--- a/lib/engine/presence/cluster-impl.h
++++ b/lib/engine/presence/cluster-impl.h
+@@ -147,7 +147,7 @@ Ekiga::ClusterImpl<HeapType>::add_heap (boost::shared_ptr<HeapType> heap)
+
+ add_connection (heap, heap->questions.connect (boost::ref (questions)));
+
+- add_object (heap);
++ this->add_object (heap);
+ }
+
+ template<typename HeapType>
+diff --git a/lib/engine/presence/heap-impl.h b/lib/engine/presence/heap-impl.h
+index d63c491..15fe86f 100644
+--- a/lib/engine/presence/heap-impl.h
++++ b/lib/engine/presence/heap-impl.h
+@@ -160,14 +160,14 @@ Ekiga::HeapImpl<PresentityType>::add_presentity (boost::shared_ptr<PresentityTyp
+ {
+ presentity->questions.add_handler (questions.make_slot ());
+
+- add_object (presentity);
++ this->add_object (presentity);
+ }
+
+ template<typename PresentityType>
+ void
+ Ekiga::HeapImpl<PresentityType>::remove_presentity (gmref_ptr<PresentityType> presentity)
+ {
+- remove_object (presentity);
++ this->remove_object (presentity);
+ }
+
+ #endif