diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp
index 0ff95f90fa8..3c6c9d3f66d 100644
--- a/src/gui/text/qfont.cpp
+++ b/src/gui/text/qfont.cpp
@@ -1013,7 +1013,8 @@ qreal QFont::pointSizeF() const
 }
 
 /*!
-    Sets the font size to \a pixelSize pixels.
+    Sets the font size to \a pixelSize pixels, with a maxiumum size
+    of an unsigned 16-bit integer.
 
     Using this function makes the font device dependent. Use
     setPointSize() or setPointSizeF() to set the size of the font