diff --git a/src/corelib/thread/qmutex_p.h b/src/corelib/thread/qmutex_p.h
index e5932d0a66e..565de31ca08 100644
--- a/src/corelib/thread/qmutex_p.h
+++ b/src/corelib/thread/qmutex_p.h
@@ -36,6 +36,8 @@ struct timespec;
 
 QT_BEGIN_NAMESPACE
 
+// We manipulate the pointer to this class in inline, atomic code,
+// so syncqt mustn't mark them as private, so ELFVERSION:ignore-next
 class QMutexPrivate
 {
 public:
diff --git a/src/corelib/thread/qthread_p.h b/src/corelib/thread/qthread_p.h
index b6479640569..9aa0b3ea22a 100644
--- a/src/corelib/thread/qthread_p.h
+++ b/src/corelib/thread/qthread_p.h
@@ -58,6 +58,7 @@ inline bool operator<(const QPostEvent &first, const QPostEvent &second)
 
 // This class holds the list of posted events.
 //  The list has to be kept sorted by priority
+// It's used in a virtual in QCoreApplication, so ELFVERSION:ignore-next
 class QPostEventList : public QList<QPostEvent>
 {
 public: