diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 634c14fe9b..0f35abe2d9 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -1637,6 +1637,29 @@
+
+ qt4*.bbclass
+
+
+ This family of classes consists of the following:
+
+ qt4e:
+ Supports building against Qt/Embedded, which uses the
+ framebuffer for graphical output.
+ qt4x11:
+ Supports building against Qt/X11.
+
+
+
+
+ These classes support recipes that need to build software that uses
+ the Qt development framework version 4.x.
+ The classes inherit the
+ qmake2
+ class.
+
+
+
Python Extensions - distutils.bbclass