diff --git a/share/qtcreator/qml/qmlpuppet/container/instancecontainer.cpp b/share/qtcreator/qml/qmlpuppet/container/instancecontainer.cpp
index 367c28f4d1b..b77b1d23ae0 100644
--- a/share/qtcreator/qml/qmlpuppet/container/instancecontainer.cpp
+++ b/share/qtcreator/qml/qmlpuppet/container/instancecontainer.cpp
@@ -99,8 +99,8 @@ QDataStream &operator<<(QDataStream &out, const InstanceContainer &container)
     out << container.minorNumber();
     out << container.componentPath();
     out << container.nodeSource();
-    out << container.nodeSourceType();
-    out << container.metaType();
+    out << qint32(container.nodeSourceType());
+    out << qint32(container.metaType());
 
     return out;
 }
diff --git a/src/libs/qmldebug/qmlenginecontrolclient.cpp b/src/libs/qmldebug/qmlenginecontrolclient.cpp
index 8ac5aa2efb2..53a3ac47562 100644
--- a/src/libs/qmldebug/qmlenginecontrolclient.cpp
+++ b/src/libs/qmldebug/qmlenginecontrolclient.cpp
@@ -106,7 +106,7 @@ void QmlEngineControlClient::sendCommand(QmlEngineControlClient::CommandType com
 {
     QByteArray data;
     QDataStream stream(&data, QIODevice::WriteOnly);
-    stream << command << engineId;
+    stream << int(command) << engineId;
     QmlDebugClient::sendMessage(data);
 }