diff --git a/samples/blackmisc/samplesjson.cpp b/samples/blackmisc/samplesjson.cpp
index d9b26c7c1..c329b2ad6 100644
--- a/samples/blackmisc/samplesjson.cpp
+++ b/samples/blackmisc/samplesjson.cpp
@@ -53,7 +53,7 @@ namespace BlackMiscTest
         CAircraft aircraft(CCallsign("DAMBZ"), CUser("123456", "Joe Pilot"), situation);
         aircraft.setCom1System(CComSystem::getCom1System(122.8, 118.75));
         aircraft.setCom2System(CComSystem::getCom2System(123.8, 124.00));
-        aircraft.setTransponder(CTransponder::getStandardTransponder(7000, CTransponder::ModeS));
+        aircraft.setTransponder(CTransponder::getStandardTransponder(7000, CTransponder::ModeC));
         aircraft.setIcaoInfo(CAircraftIcao("B737", "L2J", "DLH", "FREIGHT", "CCDDFF"));
 
         json = aircraft.toJson();
diff --git a/src/blackcore/network_vatlib.cpp b/src/blackcore/network_vatlib.cpp
index fed5a7974..05ff500f7 100644
--- a/src/blackcore/network_vatlib.cpp
+++ b/src/blackcore/network_vatlib.cpp
@@ -628,14 +628,14 @@ namespace BlackCore
 
         QString tn("transponder ");
         tn.append(callsign.asString());
-        CTransponder::TransponderMode mode = CTransponder::ModeS;
+        CTransponder::TransponderMode mode = CTransponder::StateStandby;
         switch (pos.xpdrMode)
         {
         case Cvatlib_Network::xpndrMode_Normal:
             mode = CTransponder::ModeC;
             break;
         case Cvatlib_Network::xpndrMode_Standby:
-            mode = CTransponder::ModeS;
+            mode = CTransponder::StateStandby;
             break;
         case Cvatlib_Network::xpndrMode_Ident:
             mode = CTransponder::StateIdent;
diff --git a/src/blackmisc/avaircraft.cpp b/src/blackmisc/avaircraft.cpp
index 91abd73ac..61a0a6a4a 100644
--- a/src/blackmisc/avaircraft.cpp
+++ b/src/blackmisc/avaircraft.cpp
@@ -81,7 +81,7 @@ namespace BlackMisc
          */
         void CAircraft::initTransponder()
         {
-            CTransponder xpdr("TRANSPONDER", 7000, CTransponder::ModeS);
+            CTransponder xpdr("TRANSPONDER", 7000, CTransponder::StateStandby);
             this->setTransponder(xpdr);
         }