diff --git a/src/plugins/platforms/qnx/CMakeLists.txt b/src/plugins/platforms/qnx/CMakeLists.txt
index 3dfd0063820..7c8b8c33e01 100644
--- a/src/plugins/platforms/qnx/CMakeLists.txt
+++ b/src/plugins/platforms/qnx/CMakeLists.txt
@@ -31,6 +31,14 @@ qt_internal_add_plugin(QQnxIntegrationPlugin
         qqnxscreeneventthread.cpp qqnxscreeneventthread.h
         qqnxservices.cpp qqnxservices.h
         qqnxwindow.cpp qqnxwindow.h
+    NO_PCH_SOURCES
+        qqnxclipboard.cpp # undef QT_NO_FOREACH
+        qqnxintegration.cpp # undef QT_NO_FOREACH
+        qqnxscreen.cpp # undef QT_NO_FOREACH
+        qqnxscreeneventhandler.cpp # undef QT_NO_FOREACH
+        qqnxwindow.cpp # undef QT_NO_FOREACH
+    DEFINES
+        QT_NO_FOREACH
     LIBRARIES
         Qt::Core
         Qt::CorePrivate
diff --git a/src/plugins/platforms/qnx/qqnxclipboard.cpp b/src/plugins/platforms/qnx/qqnxclipboard.cpp
index 80f9d73a3ba..8e42148c122 100644
--- a/src/plugins/platforms/qnx/qqnxclipboard.cpp
+++ b/src/plugins/platforms/qnx/qqnxclipboard.cpp
@@ -1,6 +1,8 @@
 // Copyright (C) 2011 - 2012 Research In Motion
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
+#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
+
 #if !defined(QT_NO_CLIPBOARD)
 
 #include "qqnxclipboard.h"
diff --git a/src/plugins/platforms/qnx/qqnxintegration.cpp b/src/plugins/platforms/qnx/qqnxintegration.cpp
index ff6ce05aaa4..eddc5f4051d 100644
--- a/src/plugins/platforms/qnx/qqnxintegration.cpp
+++ b/src/plugins/platforms/qnx/qqnxintegration.cpp
@@ -1,6 +1,8 @@
 // Copyright (C) 2013 BlackBerry Limited. All rights reserved.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
+#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
+
 #include "qqnxglobal.h"
 
 #include "qqnxintegration.h"
diff --git a/src/plugins/platforms/qnx/qqnxscreen.cpp b/src/plugins/platforms/qnx/qqnxscreen.cpp
index 66f8bfae010..9d689da991f 100644
--- a/src/plugins/platforms/qnx/qqnxscreen.cpp
+++ b/src/plugins/platforms/qnx/qqnxscreen.cpp
@@ -1,6 +1,8 @@
 // Copyright (C) 2011 - 2013 BlackBerry Limited. All rights reserved.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
+#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
+
 #include "qqnxglobal.h"
 
 #include "qqnxscreen.h"
diff --git a/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp b/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
index 525b22242c0..ea32a6fd095 100644
--- a/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
+++ b/src/plugins/platforms/qnx/qqnxscreeneventhandler.cpp
@@ -1,6 +1,8 @@
 // Copyright (C) 2013 BlackBerry Limited. All rights reserved.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
+#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
+
 #include "qqnxglobal.h"
 
 #include "qqnxscreeneventhandler.h"
diff --git a/src/plugins/platforms/qnx/qqnxwindow.cpp b/src/plugins/platforms/qnx/qqnxwindow.cpp
index 5310ff3c65d..eed45227f6f 100644
--- a/src/plugins/platforms/qnx/qqnxwindow.cpp
+++ b/src/plugins/platforms/qnx/qqnxwindow.cpp
@@ -1,6 +1,8 @@
 // Copyright (C) 2011 - 2013 BlackBerry Limited. All rights reserved.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
+#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
+
 #include "qqnxglobal.h"
 
 #include "qqnxwindow.h"