diff --git a/src/corelib/kernel/qtestsupport_core.h b/src/corelib/kernel/qtestsupport_core.h
index 33f36f9cbf..09babec40f 100644
--- a/src/corelib/kernel/qtestsupport_core.h
+++ b/src/corelib/kernel/qtestsupport_core.h
@@ -7,6 +7,8 @@
 #include <QtCore/qcoreapplication.h>
 #include <QtCore/qdeadlinetimer.h>
 
+#include <chrono>
+
 QT_BEGIN_NAMESPACE
 
 namespace QTest {