diff --git a/src/dbus/qdbusintegrator.cpp b/src/dbus/qdbusintegrator.cpp
index f6221d51b6..0c0109b6b6 100644
--- a/src/dbus/qdbusintegrator.cpp
+++ b/src/dbus/qdbusintegrator.cpp
@@ -1819,8 +1819,8 @@ bool QDBusConnectionPrivate::send(const QDBusMessage& message)
     }
 
     q_dbus_message_set_no_reply(msg, true); // the reply would not be delivered to anything
-    qDBusDebug() << this << "sending message (no reply):" << message;
     emit messageNeedsSending(Q_NULLPTR, msg);
+    qDBusDebug() << this << "sending message (no reply):" << message;
     return true;
 }
 
@@ -2019,8 +2019,8 @@ QDBusPendingCallPrivate *QDBusConnectionPrivate::sendWithReplyAsync(const QDBusM
         lastError = error;
         processFinishedCall(pcall);
     } else {
-        qDBusDebug() << this << "sending message:" << message;
         emit messageNeedsSending(pcall, msg, timeout);
+        qDBusDebug() << this << "sending message:" << message;
     }
     return pcall;
 }
diff --git a/src/dbus/qdbusmessage.cpp b/src/dbus/qdbusmessage.cpp
index e20c851d6c..078442f3f1 100644
--- a/src/dbus/qdbusmessage.cpp
+++ b/src/dbus/qdbusmessage.cpp
@@ -861,10 +861,16 @@ QDebug operator<<(QDebug dbg, const QDBusMessage &msg)
         msg.type() == QDBusMessage::SignalMessage)
         dbg.nospace() << ", path=" << msg.path()
                       << ", interface=" << msg.interface()
-                      << ", member=" << msg.member();
+                      << ", member=" << msg.member()
+                      << ", serial=" << msg.serial();
     if (msg.type() == QDBusMessage::ErrorMessage)
         dbg.nospace() << ", error name=" << msg.errorName()
-                      << ", error message=" << msg.errorMessage();
+                      << ", error message=" << msg.errorMessage()
+                      << ", serial=" << msg.serial()
+                      << ", reply serial=" << msg.replySerial();
+    else if (msg.type() == QDBusMessage::ReplyMessage)
+        dbg.nospace() << ", serial=" << msg.serial()
+                      << ", reply serial=" << msg.replySerial();
     dbg.nospace() << ", signature=" << msg.signature()
                   << ", contents=(";
     debugVariantList(dbg, msg.arguments());