diff --git a/src/corelib/global/qnamespace.h b/src/corelib/global/qnamespace.h
index 0ae0fdf57c..f130288a24 100644
--- a/src/corelib/global/qnamespace.h
+++ b/src/corelib/global/qnamespace.h
@@ -498,6 +498,7 @@ public:
         AA_X11InitThreads = 10,
         AA_SynthesizeTouchForUnhandledMouseEvents = 11,
         AA_SynthesizeMouseForUnhandledTouchEvents = 12,
+        AA_UseHighDpiPixmaps = 13,
 
         // Add new attributes before this line
         AA_AttributeCount
diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
index b065507645..0d9cacdb1f 100644
--- a/src/corelib/global/qnamespace.qdoc
+++ b/src/corelib/global/qnamespace.qdoc
@@ -167,6 +167,14 @@
            to left button mouse events instead. This attribute is enabled
            by default.
 
+    \value AA_UseHighDpiPixmaps Make QIcon::pixmap() generate high-dpi pixmaps
+           that can be larger than the requested size. Such pixmaps will have
+           devicePixelRatio set to a value higher than 1.
+
+           After setting this attribute application code that uses pixmap
+           sizes in layout geometry calculations should typically divide by
+           QPixmap::devicePixelRatio() to get device-independent layout geometry.
+
     \omitvalue AA_AttributeCount
 */