diff -r 56cd8111b7f7 -r 41300fa6a67c src/dbus/qdbuspendingcall.cpp
--- a/src/dbus/qdbuspendingcall.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/src/dbus/qdbuspendingcall.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -310,7 +310,7 @@
 
 bool QDBusPendingCall::isFinished() const
 {
-    return d && (d->replyMessage.type() != QDBusMessage::InvalidMessage);
+    return !d || (d->replyMessage.type() != QDBusMessage::InvalidMessage);
 }
 
 void QDBusPendingCall::waitForFinished()