diff --git a/src/contact-manager.h b/src/contact-manager.h
index 6de23d4..a19135f 100644
--- a/src/contact-manager.h
+++ b/src/contact-manager.h
@@ -84,6 +84,10 @@
   void
   addContact(const ndn::security::IdentityCertificate& idCert, const Profile& profile);
 
+  void
+  removeContact(const ndn::Name& contactNameSpace);
+  
+
 private:
   void
   setKeychain();
@@ -168,6 +172,12 @@
   void
   warning(QString msg);
 
+  void
+  contactRemoved(const ndn::Name& identity);
+
+  void
+  contactAdded(const ndn::Name& identity);                                         
+
 private slots: