diff --git a/src/plugins/languageclient/client.cpp b/src/plugins/languageclient/client.cpp
index 4c2fcf101f6..98cf59898de 100644
--- a/src/plugins/languageclient/client.cpp
+++ b/src/plugins/languageclient/client.cpp
@@ -1683,6 +1683,11 @@ void Client::setLogTarget(LogTarget target)
 }
 
 void Client::start()
+{
+    startImpl();
+}
+
+void Client::startImpl()
 {
     d->m_shutdownTimer.stop();
     LanguageClientManager::addClient(this);
diff --git a/src/plugins/languageclient/client.h b/src/plugins/languageclient/client.h
index 13e908b2d50..ec4c7c26854 100644
--- a/src/plugins/languageclient/client.h
+++ b/src/plugins/languageclient/client.h
@@ -224,6 +224,7 @@ protected:
     void handleMessage(const LanguageServerProtocol::JsonRpcMessage &message);
     virtual void handleDiagnostics(const LanguageServerProtocol::PublishDiagnosticsParams &params);
     virtual DiagnosticManager *createDiagnosticManager();
+    virtual void startImpl();
 
 private:
     friend class ClientPrivate;
diff --git a/src/plugins/qmljseditor/qmllsclient.cpp b/src/plugins/qmljseditor/qmllsclient.cpp
index 9fe50a5af7e..087e58dc255 100644
--- a/src/plugins/qmljseditor/qmllsclient.cpp
+++ b/src/plugins/qmljseditor/qmllsclient.cpp
@@ -66,10 +66,6 @@ QmllsClient *QmllsClient::clientForQmlls(const FilePath &qmlls)
 QmllsClient::QmllsClient(StdIOClientInterface *interface)
     : Client(interface)
 {
-    LanguageServerProtocol::Unregistration unregister;
-    unregister.setMethod("textDocument/semanticTokens");
-    unregister.setId({});
-    dynamicCapabilities().unregisterCapability({unregister});
 }
 
 QmllsClient::~QmllsClient()
@@ -77,4 +73,14 @@ QmllsClient::~QmllsClient()
     qmllsClients().remove(qmllsClients().key(this));
 }
 
+void QmllsClient::startImpl()
+{
+    LanguageServerProtocol::Unregistration unregister;
+    unregister.setMethod("textDocument/semanticTokens");
+    unregister.setId({});
+    dynamicCapabilities().unregisterCapability({unregister});
+
+    Client::startImpl();
+}
+
 } // namespace QmlJSEditor
diff --git a/src/plugins/qmljseditor/qmllsclient.h b/src/plugins/qmljseditor/qmllsclient.h
index 30c0170bf70..2010ea0dda0 100644
--- a/src/plugins/qmljseditor/qmllsclient.h
+++ b/src/plugins/qmljseditor/qmllsclient.h
@@ -19,6 +19,7 @@ public:
     explicit QmllsClient(LanguageClient::StdIOClientInterface *interface);
     ~QmllsClient();
 
+    void startImpl() override;
     static QmllsClient *clientForQmlls(const Utils::FilePath &qmlls);
 };