diff --git a/src/widgets/kernel/qlayoutitem.cpp b/src/widgets/kernel/qlayoutitem.cpp
index a79d9bb2c6..0e69bbc8ae 100644
--- a/src/widgets/kernel/qlayoutitem.cpp
+++ b/src/widgets/kernel/qlayoutitem.cpp
@@ -341,6 +341,8 @@ QSpacerItem * QSpacerItem::spacerItem()
 }
 
 /*!
+    \since 5.5
+
     Returns the size policy of this item.
 */
 QSizePolicy QSpacerItem::sizePolicy() const