diff --git a/src/corelib/Qt5CoreConfigExtras.cmake.in b/src/corelib/Qt5CoreConfigExtras.cmake.in
index 65fd1f93838..8242682a897 100644
--- a/src/corelib/Qt5CoreConfigExtras.cmake.in
+++ b/src/corelib/Qt5CoreConfigExtras.cmake.in
@@ -93,6 +93,8 @@ set(Qt5_DISABLED_FEATURES
 
 set_property(TARGET Qt5::Core APPEND PROPERTY INTERFACE_COMPILE_DEFINITIONS $<$<NOT:$<CONFIG:Debug>>:QT_NO_DEBUG>)
 
+set_property(TARGET Qt5::Core PROPERTY INTERFACE_COMPILE_FEATURES cxx_decltype)
+
 !!IF contains(QT_CONFIG, reduce_exports)
 set(QT_VISIBILITY_AVAILABLE \"True\")
 !!ENDIF