diff --git a/share/qtcreator/qml/qmlpuppet/instances/nodeinstanceclientproxy.cpp b/share/qtcreator/qml/qmlpuppet/instances/nodeinstanceclientproxy.cpp
index 1f23d39d7d0..0138fcc9d85 100644
--- a/share/qtcreator/qml/qmlpuppet/instances/nodeinstanceclientproxy.cpp
+++ b/share/qtcreator/qml/qmlpuppet/instances/nodeinstanceclientproxy.cpp
@@ -77,7 +77,7 @@
 
 namespace QmlDesigner {
 
-constexpr void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
+void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
     = &QLocalSocket::error;
 #else
diff --git a/src/libs/clangsupport/connectionclient.cpp b/src/libs/clangsupport/connectionclient.cpp
index fe74c6ca1dc..ed9f4c53f45 100644
--- a/src/libs/clangsupport/connectionclient.cpp
+++ b/src/libs/clangsupport/connectionclient.cpp
@@ -324,7 +324,7 @@ void ConnectionClient::connectStandardOutputAndError(QProcess *process) const
 
 void ConnectionClient::connectLocalSocketError() const
 {
-    constexpr void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
+    void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
             = &QLocalSocket::error;
 #else
diff --git a/src/libs/clangsupport/connectionserver.h b/src/libs/clangsupport/connectionserver.h
index 1196459c565..941423b0d15 100644
--- a/src/libs/clangsupport/connectionserver.h
+++ b/src/libs/clangsupport/connectionserver.h
@@ -81,7 +81,7 @@ public:
 private:
     void connectToLocalServer(const QString &connectionName)
     {
-        constexpr void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
+        void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
                 = &QLocalSocket::error;
 #else
diff --git a/src/libs/qmldebug/qmldebugconnection.cpp b/src/libs/qmldebug/qmldebugconnection.cpp
index cb31557d108..ad34bdddab1 100644
--- a/src/libs/qmldebug/qmldebugconnection.cpp
+++ b/src/libs/qmldebug/qmldebugconnection.cpp
@@ -392,7 +392,7 @@ void QmlDebugConnection::newConnection()
     connect(socket, &QLocalSocket::disconnected, this, &QmlDebugConnection::socketDisconnected,
             Qt::QueuedConnection);
 
-    constexpr void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
+    void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
                 = &QLocalSocket::error;
 #else
diff --git a/src/plugins/boot2qt/device-detection/qdbwatcher.cpp b/src/plugins/boot2qt/device-detection/qdbwatcher.cpp
index 2435dbaea7f..377c84f21ce 100644
--- a/src/plugins/boot2qt/device-detection/qdbwatcher.cpp
+++ b/src/plugins/boot2qt/device-detection/qdbwatcher.cpp
@@ -62,7 +62,7 @@ void QdbWatcher::start(RequestType requestType)
 
 void QdbWatcher::startPrivate()
 {
-    constexpr void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
+    void (QLocalSocket::*LocalSocketErrorFunction)(QLocalSocket::LocalSocketError)
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
                 = &QLocalSocket::error;
 #else