diff --git a/src/plugins/genericprojectmanager/filesselectionwizardpage.h b/src/plugins/genericprojectmanager/filesselectionwizardpage.h
index 80cd1beceec..0d9c36348a0 100644
--- a/src/plugins/genericprojectmanager/filesselectionwizardpage.h
+++ b/src/plugins/genericprojectmanager/filesselectionwizardpage.h
@@ -32,10 +32,12 @@
 
 #include <QWizardPage>
 
+QT_BEGIN_NAMESPACE
 class QVBoxLayout;
 class QLabel;
 class QTreeView;
 class QLineEdit;
+QT_END_NAMESPACE
 
 namespace GenericProjectManager {
 namespace Internal {
diff --git a/src/plugins/genericprojectmanager/selectablefilesmodel.h b/src/plugins/genericprojectmanager/selectablefilesmodel.h
index b2c37fcb892..fcd09beb5d4 100644
--- a/src/plugins/genericprojectmanager/selectablefilesmodel.h
+++ b/src/plugins/genericprojectmanager/selectablefilesmodel.h
@@ -38,9 +38,9 @@
 #include <QTreeView>
 #include <QLabel>
 
-class QLabel;
-class QTreeView;
+QT_BEGIN_NAMESPACE
 class QVBoxLayout;
+QT_END_NAMESPACE
 
 namespace GenericProjectManager {
 namespace Internal {