diff --git a/src/plugins/qt4projectmanager/qt-s60/passphraseforkeydialog.h b/src/plugins/qt4projectmanager/qt-s60/passphraseforkeydialog.h
index cd231c95dc44cf60e0be56f0a91c51814d2fc32f..c6343f8956bfd7cec1e65f12e0ef2897f518a461 100644
--- a/src/plugins/qt4projectmanager/qt-s60/passphraseforkeydialog.h
+++ b/src/plugins/qt4projectmanager/qt-s60/passphraseforkeydialog.h
@@ -3,7 +3,7 @@
 
 #include <QtGui/QDialog>
 
-class QCheckBox;
+QT_FORWARD_DECLARE_CLASS(QCheckBox);
 
 namespace Qt4ProjectManager {
 
diff --git a/src/plugins/qt4projectmanager/qt-s60/s60createpackagestep.h b/src/plugins/qt4projectmanager/qt-s60/s60createpackagestep.h
index 89495a7d11740f88ebc500ce3adfea64faa32e41..2cc031861a71c3603dbc242676617d72597fa02c 100644
--- a/src/plugins/qt4projectmanager/qt-s60/s60createpackagestep.h
+++ b/src/plugins/qt4projectmanager/qt-s60/s60createpackagestep.h
@@ -38,7 +38,9 @@
 #include <QMutex>
 #include <QWaitCondition>
 
+QT_BEGIN_NAMESPACE
 class QSettings;
+QT_END_NAMESPACE
 
 namespace Qt4ProjectManager {
 namespace Internal {