diff --git a/src/corelib/kernel/qtestsupport_core.h b/src/corelib/kernel/qtestsupport_core.h
index 0050bcee9b0..12094451d95 100644
--- a/src/corelib/kernel/qtestsupport_core.h
+++ b/src/corelib/kernel/qtestsupport_core.h
@@ -8,6 +8,8 @@
 #include <QtCore/qdeadlinetimer.h>
 #include <QtCore/qthread.h>
 
+#include <chrono>
+
 QT_BEGIN_NAMESPACE
 
 namespace QTest {