diff --git a/src/corelib/CMakeLists.txt b/src/corelib/CMakeLists.txt
index 8a3bc0ab84..2703ec5913 100644
--- a/src/corelib/CMakeLists.txt
+++ b/src/corelib/CMakeLists.txt
@@ -40,7 +40,6 @@ qt_internal_add_module(Core
         global/qglobal.cpp global/qglobal.h
         global/qglobalstatic.h
         global/qhooks.cpp global/qhooks_p.h
-        global/qisenum.h
         global/qlibraryinfo.cpp global/qlibraryinfo.h
         global/qlogging.cpp global/qlogging.h
         global/qmalloc.cpp
diff --git a/src/corelib/global/global.pri b/src/corelib/global/global.pri
index a556f91218..4e9a0a0c8b 100644
--- a/src/corelib/global/global.pri
+++ b/src/corelib/global/global.pri
@@ -20,7 +20,6 @@ HEADERS +=  \
         global/qlogging.h \
         global/qtypeinfo.h \
         global/qsysinfo.h \
-        global/qisenum.h \
         global/qsimd.h \
         global/qsimd_p.h \
         global/qflags.h \
diff --git a/src/corelib/global/qisenum.h b/src/corelib/global/qisenum.h
deleted file mode 100644
index 8f784ef6e3..0000000000
--- a/src/corelib/global/qisenum.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtCore module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QtCore/qglobal.h>
-
-#ifndef QISENUM_H
-#define QISENUM_H
-
-// Use of Q_IS_ENUM is deprecated since 5.8
-#define Q_IS_ENUM(x) std::is_enum<x>::value
-
-// shut up syncqt
-QT_BEGIN_NAMESPACE
-QT_END_NAMESPACE
-#endif // QISENUM_H