diff --git a/src/corelib/compat/removed_api.cpp b/src/corelib/compat/removed_api.cpp
index a06dcbb87f..324ff9373f 100644
--- a/src/corelib/compat/removed_api.cpp
+++ b/src/corelib/compat/removed_api.cpp
@@ -1296,6 +1296,7 @@ void QBasicMutex::destroyInternal(QMutexPrivate *d)
 #include "qobject.h"
 
 #ifdef Q_COMPILER_MANGLES_RETURN_TYPE
+#include <private/qobject_p.h>
 QMetaObject *QObjectData::dynamicMetaObject() const
 {
     // ### keep in sync with the master version in qobject.cpp