diff --git a/tests/auto/network-helpers.h b/tests/auto/network-helpers.h
index 99125a88443..38091c060ff 100644
--- a/tests/auto/network-helpers.h
+++ b/tests/auto/network-helpers.h
@@ -3,6 +3,7 @@
 
 #include <QtNetwork/qtnetworkglobal.h>
 
+#include <QtCore/qoperatingsystemversion.h>
 #include <QtCore/qsystemdetection.h>
 
 #if QT_CONFIG(ssl)