diff --git a/src/corelib/io/qdiriterator.cpp b/src/corelib/io/qdiriterator.cpp
index f539fd3bfaf..faea8088cb5 100644
--- a/src/corelib/io/qdiriterator.cpp
+++ b/src/corelib/io/qdiriterator.cpp
@@ -5,6 +5,7 @@
     \since 4.3
     \class QDirIterator
     \inmodule QtCore
+    \ingroup io
     \brief The QDirIterator class provides an iterator for directory entrylists.
 
     You can use QDirIterator to navigate entries of a directory one at a time.
diff --git a/src/corelib/io/qlockfile.cpp b/src/corelib/io/qlockfile.cpp
index 0eb6acb6947..a15549217a0 100644
--- a/src/corelib/io/qlockfile.cpp
+++ b/src/corelib/io/qlockfile.cpp
@@ -42,6 +42,7 @@ static QString machineName()
 /*!
     \class QLockFile
     \inmodule QtCore
+    \ingroup io
     \brief The QLockFile class provides locking between processes using a file.
     \since 5.1