diff --git a/src/plugins/platforms/ios/CMakeLists.txt b/src/plugins/platforms/ios/CMakeLists.txt
index 37457832483..1085d41aa8c 100644
--- a/src/plugins/platforms/ios/CMakeLists.txt
+++ b/src/plugins/platforms/ios/CMakeLists.txt
@@ -28,6 +28,13 @@ qt_internal_add_plugin(QIOSIntegrationPlugin
         quiaccessibilityelement.h quiaccessibilityelement.mm
         quiview.h quiview.mm
         uistrings_p.h uistrings.cpp
+    NO_PCH_SOURCES
+        qioscontext.mm # undef QT_NO_FOREACH
+        qiosintegration.mm # undef QT_NO_FOREACH
+        qiosplatformaccessibility.mm # undef QT_NO_FOREACH
+        qiosscreen.mm # undef QT_NO_FOREACH
+    DEFINES
+        QT_NO_FOREACH
     LIBRARIES
         ${FWAudioToolbox}
         ${FWFoundation}
diff --git a/src/plugins/platforms/ios/qioscontext.mm b/src/plugins/platforms/ios/qioscontext.mm
index 16490898415..499adea0fef 100644
--- a/src/plugins/platforms/ios/qioscontext.mm
+++ b/src/plugins/platforms/ios/qioscontext.mm
@@ -1,6 +1,8 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // 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 "qioscontext.h"
 
 #include "qiosintegration.h"
diff --git a/src/plugins/platforms/ios/qiosintegration.mm b/src/plugins/platforms/ios/qiosintegration.mm
index 27d0f7f2ba9..44aeaabec20 100644
--- a/src/plugins/platforms/ios/qiosintegration.mm
+++ b/src/plugins/platforms/ios/qiosintegration.mm
@@ -1,6 +1,8 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // 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 "qiosintegration.h"
 #include "qioseventdispatcher.h"
 #include "qiosglobal.h"
diff --git a/src/plugins/platforms/ios/qiosplatformaccessibility.mm b/src/plugins/platforms/ios/qiosplatformaccessibility.mm
index f22782fb043..f128ed6d67a 100644
--- a/src/plugins/platforms/ios/qiosplatformaccessibility.mm
+++ b/src/plugins/platforms/ios/qiosplatformaccessibility.mm
@@ -1,6 +1,8 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // 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 "qiosplatformaccessibility.h"
 
 #if QT_CONFIG(accessibility)
diff --git a/src/plugins/platforms/ios/qiosscreen.mm b/src/plugins/platforms/ios/qiosscreen.mm
index 8a034a98bcb..65a8c21060c 100644
--- a/src/plugins/platforms/ios/qiosscreen.mm
+++ b/src/plugins/platforms/ios/qiosscreen.mm
@@ -1,6 +1,8 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // 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 "qiosglobal.h"
 #include "qiosintegration.h"
 #include "qiosscreen.h"