diff --git a/src/corelib/global/qlogging.cpp b/src/corelib/global/qlogging.cpp
index e562fed336..f2d4a50a2c 100644
--- a/src/corelib/global/qlogging.cpp
+++ b/src/corelib/global/qlogging.cpp
@@ -422,8 +422,8 @@ void QMessageLogger::info(const char *msg, ...) const
 
     \snippet code/qlogging/qlogging.cpp 2
 
-    A function which this signature is generated by Q_DECLARE_LOGGING_CATEGORY,
-    Q_LOGGING_CATEGORY.
+    The \c Q_DECLARE_LOGGING_CATEGORY macro generates a function declaration
+    with this signature, and \c Q_LOGGING_CATEGORY generates its definition.
 
     \since 5.3
 */
@@ -1946,9 +1946,10 @@ void qErrnoWarning(int code, const char *msg, ...)
     compilation. If you implement your own message handler, you get total
     control of these messages.
 
-    The default message handler prints the message to the standard
-    output under X11 or to the debugger under Windows. If it is a
-    fatal message, the application aborts immediately.
+    The default message handler prints the message to the standard output
+    under X11 or to the debugger under Windows. If it is a fatal message, the
+    application aborts immediately after handling that message. Custom
+    message handlers should not attempt to exit an application on their own.
 
     Only one message handler can be defined, since this is usually
     done on an application-wide basis to control debug output.
@@ -2015,7 +2016,7 @@ void qErrnoWarning(int code, const char *msg, ...)
     Example:
     \snippet code/src_corelib_global_qlogging.cpp 0
 
-    The default \a pattern is "%{if-category}%{category}: %{endif}%{message}".
+    The default \a pattern is \c{%{if-category}%{category}: %{endif}%{message}}.
 
     The \a pattern can also be changed at runtime by setting the QT_MESSAGE_PATTERN
     environment variable; if both \l qSetMessagePattern() is called and QT_MESSAGE_PATTERN is
diff --git a/src/corelib/itemmodels/qabstractitemmodel.cpp b/src/corelib/itemmodels/qabstractitemmodel.cpp
index 02ffd0e085..b28597468f 100644
--- a/src/corelib/itemmodels/qabstractitemmodel.cpp
+++ b/src/corelib/itemmodels/qabstractitemmodel.cpp
@@ -2086,7 +2086,7 @@ bool QAbstractItemModel::clearItemData(const QModelIndex &index)
     by the \a index.
 
     \note If you do not have a value to return, return an \b invalid
-    QVariant instead of returning 0.
+    (default-constructed) QVariant.
 
     \sa Qt::ItemDataRole, setData(), headerData()
 */