diff --git a/src/corelib/doc/src/implicit-sharing.qdoc b/src/corelib/doc/src/implicit-sharing.qdoc
index 1185fe83487b655f88b78aeb4e5c61e2c62e93b8..ec8edb4b6bf47b90b3fb2db2a446a1018b1a07cd 100644
--- a/src/corelib/doc/src/implicit-sharing.qdoc
+++ b/src/corelib/doc/src/implicit-sharing.qdoc
@@ -30,6 +30,7 @@
 
 /*!
     \group shared
+    \brief How to maximize resource usage by implicit data sharing.
     \title Implicitly Shared Classes
 
     These \l{Qt Core} classes provides a safe and efficient way of sharing and
diff --git a/src/corelib/doc/src/statemachine.qdoc b/src/corelib/doc/src/statemachine.qdoc
index b281eb177b112022bad5bd9e96b62a902cece0f8..846eb7d1f055f2b12fb487cfe680a595e3358c41 100644
--- a/src/corelib/doc/src/statemachine.qdoc
+++ b/src/corelib/doc/src/statemachine.qdoc
@@ -27,6 +27,7 @@
 
 /*!
     \group statemachine
+    \brief How to create and execute state graphs.
     \title State Machine Classes
 
     These \l{Qt Core} classes are part of the \l{The State Machine Framework}{
diff --git a/src/gui/doc/src/richtext.qdoc b/src/gui/doc/src/richtext.qdoc
index 90248298d62208053c48df25f0f741481066ea1c..460018a52e96f9c063bca06f4439c895d3706819 100644
--- a/src/gui/doc/src/richtext.qdoc
+++ b/src/gui/doc/src/richtext.qdoc
@@ -27,6 +27,7 @@
 
 /*!
     \group richtext-processing
+    \brief How to use Rich Text Processing APIs.
     \title Rich Text Processing APIs
 */