diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
index 74c0940bb7e..d429ce9a8ad 100644
--- a/src/gui/CMakeLists.txt
+++ b/src/gui/CMakeLists.txt
@@ -230,6 +230,7 @@ add_qt_module(Gui
     DEFINES
         QT_NO_USING_NAMESPACE
         QT_NO_FOREACH
+        QT_QPA_DEFAULT_PLATFORM_NAME="${QT_QPA_DEFAULT_PLATFORM}"
     LIBRARIES
         Qt::CorePrivate
         ZLIB::ZLIB
diff --git a/src/gui/configure.cmake b/src/gui/configure.cmake
index 1d57ce73283..8d2417d7d02 100644
--- a/src/gui/configure.cmake
+++ b/src/gui/configure.cmake
@@ -930,5 +930,3 @@ qt_feature("whatsthis" PUBLIC
     PURPOSE "Supports displaying \"What's this\" help."
 )
 qt_feature_definition("whatsthis" "QT_NO_WHATSTHIS" NEGATE VALUE "1")
-
-qt_extra_definition("QT_QPA_DEFAULT_PLATFORM" "${QT_QPA_DEFAULT_PLATFORM}" PUBLIC)
diff --git a/util/cmake/configurejson2cmake.py b/util/cmake/configurejson2cmake.py
index 4cbcc981ce8..1edb4b44a15 100755
--- a/util/cmake/configurejson2cmake.py
+++ b/util/cmake/configurejson2cmake.py
@@ -1008,9 +1008,6 @@ def processJson(dir, ctx, data):
             cm_fh.write('qt_extra_definition("QT_VERSION_MINOR" ${PROJECT_VERSION_MINOR} PUBLIC)\n')
             cm_fh.write('qt_extra_definition("QT_VERSION_PATCH" ${PROJECT_VERSION_PATCH} PUBLIC)\n')
 
-        if ctx.get('module') == 'gui':
-            cm_fh.write('\nqt_extra_definition("QT_QPA_DEFAULT_PLATFORM" "${QT_QPA_DEFAULT_PLATFORM}" PUBLIC)\n')
-
     # do this late:
     processSubconfigs(dir, ctx, data)