diff -r 41300fa6a67c -r 3b1da2848fc7 src/dbus/qdbusmarshaller.cpp
--- a/src/dbus/qdbusmarshaller.cpp	Tue Feb 02 00:43:10 2010 +0200
+++ b/src/dbus/qdbusmarshaller.cpp	Fri Feb 19 23:40:16 2010 +0200
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -387,7 +387,6 @@
     switch (*signature) {
 #ifdef __OPTIMIZE__
     case DBUS_TYPE_BYTE:
-    case DBUS_TYPE_BOOLEAN:
     case DBUS_TYPE_INT16:
     case DBUS_TYPE_UINT16:
     case DBUS_TYPE_INT32:
@@ -397,6 +396,9 @@
     case DBUS_TYPE_DOUBLE:
         qIterAppend(&iterator, ba, *signature, arg.constData());
         return true;
+    case DBUS_TYPE_BOOLEAN:
+        append( arg.toBool() );
+        return true;
 #else
     case DBUS_TYPE_BYTE:
         append( qvariant_cast<uchar>(arg) );