diff --git a/src/testlib/3rdparty/cycle/cycle_include_p.h b/src/testlib/3rdparty/cycle/cycle_include_p.h
new file mode 100644
index 00000000000..2427c9f6e37
--- /dev/null
+++ b/src/testlib/3rdparty/cycle/cycle_include_p.h
@@ -0,0 +1,19 @@
+// Copyright (C) 2025 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QBENCHLIB_CYCLE_INCLUDE_H
+#define QBENCHLIB_CYCLE_INCLUDE_H
+
+#include <QtCore/qcompilerdetection.h>
+
+// This file suppresses compilation warnings coming from cycle_p.h.
+// Include this file instead of cycle_p.h directly.
+
+#define QBENCHLIB_INCLUDING_CYCLE_P
+QT_WARNING_PUSH
+QT_WARNING_DISABLE_CLANG("-Wundef")
+QT_WARNING_DISABLE_GCC("-Wundef")
+#include "cycle_p.h"
+QT_WARNING_POP
+
+#endif // QBENCHLIB_CYCLE_INCLUDE_H
diff --git a/src/testlib/3rdparty/cycle/cycle_p.h b/src/testlib/3rdparty/cycle/cycle_p.h
index f281c55d48f..db1e31444a2 100644
--- a/src/testlib/3rdparty/cycle/cycle_p.h
+++ b/src/testlib/3rdparty/cycle/cycle_p.h
@@ -80,6 +80,10 @@
 #define QBENCHLIB_CYCLE_H
 #define ticks CycleCounterTicks
 
+#ifndef QBENCHLIB_INCLUDING_CYCLE_P
+#error Include cycle_include_p.h instead of this file
+#endif
+
 /***************************************************************************/
 
 #if TIME_WITH_SYS_TIME
diff --git a/src/testlib/CMakeLists.txt b/src/testlib/CMakeLists.txt
index bfd2b44104c..aa9597f9c4f 100644
--- a/src/testlib/CMakeLists.txt
+++ b/src/testlib/CMakeLists.txt
@@ -15,6 +15,7 @@ qt_internal_add_module(Test
     EXCEPTIONS
     SOURCES
         3rdparty/cycle/cycle_p.h # Needed by tests, so visible to syncqt.
+        3rdparty/cycle/cycle_include_p.h # Also needed by tests.
         3rdparty/catch2/catch_p.h # Also needed by tests.
         removed_api.cpp     # keep first
         qabstracttestlogger.cpp qabstracttestlogger_p.h
diff --git a/src/testlib/qbenchmarktimemeasurers_p.h b/src/testlib/qbenchmarktimemeasurers_p.h
index ce11a7dc6e8..9fda1c963b9 100644
--- a/src/testlib/qbenchmarktimemeasurers_p.h
+++ b/src/testlib/qbenchmarktimemeasurers_p.h
@@ -17,7 +17,7 @@
 
 #include <QtTest/private/qbenchmarkmeasurement_p.h>
 #include <QtCore/qelapsedtimer.h>
-#include <QtTest/private/cycle_p.h>
+#include <QtTest/private/cycle_include_p.h>
 
 QT_BEGIN_NAMESPACE
 
diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index 8b7f7479751..d0f0e6b5638 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -37,7 +37,7 @@
 #if QT_CONFIG(batch_test_support)
 #include <QtTest/private/qtestregistry_p.h>
 #endif  // QT_CONFIG(batch_test_support)
-#include <QtTest/private/cycle_p.h>
+#include <QtTest/private/cycle_include_p.h>
 #include <QtTest/private/qtestblacklist_p.h>
 #include <QtTest/private/qtestcrashhandler_p.h>
 #if defined(HAVE_XCTEST)
diff --git a/src/testlib/qtestcrashhandler.cpp b/src/testlib/qtestcrashhandler.cpp
index bc4e1629dd9..c2a10dedf64 100644
--- a/src/testlib/qtestcrashhandler.cpp
+++ b/src/testlib/qtestcrashhandler.cpp
@@ -37,7 +37,7 @@
 #if QT_CONFIG(batch_test_support)
 #include <QtTest/private/qtestregistry_p.h>
 #endif  // QT_CONFIG(batch_test_support)
-#include <QtTest/private/cycle_p.h>
+#include <QtTest/private/cycle_include_p.h>
 #include <QtTest/private/qtestblacklist_p.h>
 #if defined(HAVE_XCTEST)
 #include <QtTest/private/qxctestlogger_p.h>
diff --git a/tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp b/tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp
index 204a28599ef..04371d30182 100644
--- a/tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp
+++ b/tests/auto/testlib/selftests/benchlibtickcounter/tst_benchlibtickcounter.cpp
@@ -5,7 +5,7 @@
 #include <QtCore/QCoreApplication>
 #include <QTest>
 
-#include <private/cycle_p.h>
+#include <private/cycle_include_p.h>
 
 class tst_BenchlibTickCounter: public QObject
 {
diff --git a/tests/auto/testlib/selftests/tst_selftests.cpp b/tests/auto/testlib/selftests/tst_selftests.cpp
index 82324e06bf9..a8dd8c6fc5a 100644
--- a/tests/auto/testlib/selftests/tst_selftests.cpp
+++ b/tests/auto/testlib/selftests/tst_selftests.cpp
@@ -21,7 +21,7 @@ QT_REQUIRE_CONFIG(process);
 
 #include <QProcess>
 
-#include <private/cycle_p.h>
+#include <private/cycle_include_p.h>
 
 #include <QtTest/private/qemulationdetector_p.h>