diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index d2aada062..f0cc213e7 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -6064,6 +6064,12 @@ void _linphone_core_uninit(LinphoneCore *lc)
 	if (lc->friends_db_file) {
 		ms_free(lc->friends_db_file);
 	}
+	if (lc->tls_key){
+		ms_free(lc->tls_key);
+	}
+	if (lc->tls_cert){
+		ms_free(lc->tls_cert);
+	}
 	if (lc->ringtoneplayer) {
 		linphone_ringtoneplayer_destroy(lc->ringtoneplayer);
 	}
diff --git a/src/conference/handlers/remote-conference-event-handler-p.h b/src/conference/handlers/remote-conference-event-handler-p.h
index 8d4a06836..85a7134ba 100644
--- a/src/conference/handlers/remote-conference-event-handler-p.h
+++ b/src/conference/handlers/remote-conference-event-handler-p.h
@@ -33,6 +33,7 @@ LINPHONE_BEGIN_NAMESPACE
 
 class RemoteConferenceEventHandlerPrivate : public ObjectPrivate, public CoreListener {
 private:
+	~RemoteConferenceEventHandlerPrivate();
 	void simpleNotifyReceived (const std::string &xmlBody);
 	void subscribe ();
 	void unsubscribe ();
diff --git a/src/conference/handlers/remote-conference-event-handler.cpp b/src/conference/handlers/remote-conference-event-handler.cpp
index fb743e13e..52dd3fc14 100644
--- a/src/conference/handlers/remote-conference-event-handler.cpp
+++ b/src/conference/handlers/remote-conference-event-handler.cpp
@@ -42,6 +42,12 @@ using namespace Xsd::ConferenceInfo;
 
 // -----------------------------------------------------------------------------
 
+RemoteConferenceEventHandlerPrivate::~RemoteConferenceEventHandlerPrivate(){
+	if (lev){
+		unsubscribe();
+	}
+}
+
 void RemoteConferenceEventHandlerPrivate::simpleNotifyReceived (const string &xmlBody) {
 	istringstream data(xmlBody);
 	unique_ptr<ConferenceType> confInfo = parseConferenceInfo(data, Xsd::XmlSchema::Flags::dont_validate);
diff --git a/tester/tester_hosts b/tester/tester_hosts
index 686c42b88..6cbe9b3e2 100644
--- a/tester/tester_hosts
+++ b/tester/tester_hosts
@@ -1,4 +1,4 @@
-94.23.19.176	sip2.linphone.org sip.example.org sipopen.example.org auth.example.org auth1.example.org auth2.example.org altname.linphone.org sip.wildcard1.linphone.org altname.wildcard2.linphone.org sipv4.example.org
-2001:41d0:2:14b0::1 sip2.linphone.org sip.example.org sipopen.example.org auth.example.org auth1.example.org auth2.example.org altname.linphone.org sip.wildcard1.linphone.org altname.wildcard2.linphone.org
+54.37.202.228  sip2.linphone.org sip.example.org sipopen.example.org auth.example.org auth1.example.org auth2.example.org altname.linphone.org sip.wildcard1.linphone.org altname.wildcard2.linphone.org sipv4.example.org
+2001:41d0:700:789::2010 sip2.linphone.org sip.example.org sipopen.example.org auth.example.org auth1.example.org auth2.example.org altname.linphone.org sip.wildcard1.linphone.org altname.wildcard2.linphone.org
 188.165.46.90 tunnel.wildcard2.linphone.org
-64:ff9b::94.23.19.176 sipv4-nat64.example.org 
+64:ff9b::54.37.202.228 sipv4-nat64.example.org