diff --git a/cmake/QtInternalTargets.cmake b/cmake/QtInternalTargets.cmake
index faa724e68f5..d8ccdefcb0e 100644
--- a/cmake/QtInternalTargets.cmake
+++ b/cmake/QtInternalTargets.cmake
@@ -160,6 +160,7 @@ qt_internal_add_global_definition(QT_NO_AS_CONST)
 qt_internal_add_global_definition(QT_NO_QEXCHANGE)
 qt_internal_add_global_definition(QT_NO_NARROWING_CONVERSIONS_IN_CONNECT)
 qt_internal_add_global_definition(QT_EXPLICIT_QFILE_CONSTRUCTION_FROM_PATH)
+qt_internal_add_global_definition(QT_USE_QSTRINGBUILDER SCOPE PLUGIN)
 
 if(WARNINGS_ARE_ERRORS)
     qt_internal_set_warnings_are_errors_flags(PlatformModuleInternal INTERFACE)