diff --git a/src/contact-manager.h b/src/contact-manager.h
index 3cc816d..42fd847 100644
--- a/src/contact-manager.h
+++ b/src/contact-manager.h
@@ -75,7 +75,7 @@
 
 signals:
   void 
-  contactFetched(ndn::Ptr<EndorseCertificate> selfEndorseCertificate);
+  contactFetched(const EndorseCertificate& selfEndorseCertificate);
   
   void
   contactFetchFailed(const ndn::Name& identity);