diff --git a/src/contact-item.cpp b/src/contact-item.cpp
index c14b328..b737daa 100644
--- a/src/contact-item.cpp
+++ b/src/contact-item.cpp
@@ -24,6 +24,7 @@
 ContactItem::ContactItem(const EndorseCertificate& selfEndorseCertificate,
                          const string& alias)
   : m_selfEndorseCertificate(selfEndorseCertificate)
+  , m_isIntroducer(false)
 {
   Name endorsedkeyName = selfEndorseCertificate.getPublicKeyName();
   Ptr<const signature::Sha256WithRsa> endorseSig = boost::dynamic_pointer_cast<const signature::Sha256WithRsa>(selfEndorseCertificate.getSignature());
@@ -65,3 +66,12 @@
   m_institution = string(institutionBlob->buf(), institutionBlob->size());
 }
 
+ContactItem::ContactItem(const ContactItem& contactItem)
+  : m_selfEndorseCertificate(contactItem.m_selfEndorseCertificate)
+  , m_namespace(contactItem.m_namespace)
+  , m_alias(contactItem.m_alias)
+  , m_name(contactItem.m_name)
+  , m_institution(contactItem.m_institution)
+  , m_isIntroducer(false)
+{}
+