diff --git a/src/blackmisc/blackmiscfreefunctions.cpp b/src/blackmisc/blackmiscfreefunctions.cpp
index 022b50337..401f70124 100644
--- a/src/blackmisc/blackmiscfreefunctions.cpp
+++ b/src/blackmisc/blackmiscfreefunctions.cpp
@@ -50,13 +50,15 @@ void BlackMisc::Aviation::registerMetadata()
     CTransponder::registerMetadata();
     CHeading::registerMetadata();
     CTrack::registerMetadata();
+    CInformationMessage::registerMetadata();
     CCallsign::registerMetadata();
     CCallsignList::registerMetadata();
     CAtcStation::registerMetadata();
-    CInformationMessage::registerMetadata();
     CAtcStationList::registerMetadata();
     CAircraft::registerMetadata();
     CAircraftList::registerMetadata();
+    CAirport::registerMetadata();
+    CAirportList::registerMetadata();
     CAircraftSituation::registerMetadata();
     CAircraftIcao::registerMetadata();
     CAirportIcao::registerMetadata();
diff --git a/src/blackmisc/nwclientlist.cpp b/src/blackmisc/nwclientlist.cpp
index c1f287a1e..2bf5ee703 100644
--- a/src/blackmisc/nwclientlist.cpp
+++ b/src/blackmisc/nwclientlist.cpp
@@ -26,6 +26,10 @@ namespace BlackMisc
          */
         void CClientList::registerMetadata()
         {
+            qRegisterMetaType<BlackMisc::CSequence<CClient>>();
+            qDBusRegisterMetaType<BlackMisc::CSequence<CClient>>();
+            qRegisterMetaType<BlackMisc::CCollection<CClient>>();
+            qDBusRegisterMetaType<BlackMisc::CCollection<CClient>>();
             qRegisterMetaType<CClientList>();
             qDBusRegisterMetaType<CClientList>();
         }