diff --git a/src/plugins/languageclient/languageclientcompletionassist.cpp b/src/plugins/languageclient/languageclientcompletionassist.cpp
index 0b1388a3480..2a1ff2c0949 100644
--- a/src/plugins/languageclient/languageclientcompletionassist.cpp
+++ b/src/plugins/languageclient/languageclientcompletionassist.cpp
@@ -34,7 +34,6 @@
 #include <texteditor/codeassist/assistproposalitem.h>
 #include <texteditor/codeassist/genericproposal.h>
 #include <texteditor/codeassist/genericproposalmodel.h>
-#include <texteditor/codeassist/iassistprocessor.h>
 #include <texteditor/snippets/snippet.h>
 #include <texteditor/snippets/snippetassistcollector.h>
 #include <texteditor/texteditorsettings.h>
@@ -322,36 +321,6 @@ public:
 };
 
 
-class LanguageClientCompletionAssistProcessor final : public IAssistProcessor
-{
-public:
-    LanguageClientCompletionAssistProcessor(Client *client,
-                                            const CompletionItemsTransformer &itemsTransformer,
-                                            const CompletionApplyHelper &applyHelper,
-                                            const ProposalHandler &proposalHandler,
-                                            const QString &snippetsGroup);
-    ~LanguageClientCompletionAssistProcessor() override;
-    IAssistProposal *perform(const AssistInterface *interface) override;
-    bool running() override;
-    bool needsRestart() const override { return true; }
-    void cancel() override;
-
-private:
-    void handleCompletionResponse(const CompletionRequest::Response &response);
-
-    QPointer<QTextDocument> m_document;
-    Utils::FilePath m_filePath;
-    QPointer<Client> m_client;
-    Utils::optional<MessageId> m_currentRequest;
-    QMetaObject::Connection m_postponedUpdateConnection;
-    const CompletionItemsTransformer m_itemsTransformer;
-    const CompletionApplyHelper m_applyHelper;
-    const ProposalHandler m_proposalHandler;
-    const QString m_snippetsGroup;
-    int m_pos = -1;
-    int m_basePos = -1;
-};
-
 LanguageClientCompletionAssistProcessor::LanguageClientCompletionAssistProcessor(Client *client,
     const CompletionItemsTransformer &itemsTransformer, const CompletionApplyHelper &applyHelper,
     const ProposalHandler &proposalHandler, const QString &snippetsGroup)
diff --git a/src/plugins/languageclient/languageclientcompletionassist.h b/src/plugins/languageclient/languageclientcompletionassist.h
index 9d0869c2b00..6beb20042ed 100644
--- a/src/plugins/languageclient/languageclientcompletionassist.h
+++ b/src/plugins/languageclient/languageclientcompletionassist.h
@@ -25,8 +25,11 @@
 
 #pragma once
 
+#include "languageclient_global.h"
+
 #include <languageserverprotocol/completion.h>
 #include <texteditor/codeassist/completionassistprovider.h>
+#include <texteditor/codeassist/iassistprocessor.h>
 
 #include <utils/optional.h>
 
@@ -49,7 +52,8 @@ using CompletionApplyHelper = std::function<void(
         TextEditor::TextDocumentManipulatorInterface &, QChar)>;
 using ProposalHandler = std::function<void(TextEditor::IAssistProposal *)>;
 
-class LanguageClientCompletionAssistProvider : public TextEditor::CompletionAssistProvider
+class LANGUAGECLIENT_EXPORT LanguageClientCompletionAssistProvider
+    : public TextEditor::CompletionAssistProvider
 {
     Q_OBJECT
 
@@ -80,4 +84,35 @@ private:
     Client *m_client = nullptr; // not owned
 };
 
+class LANGUAGECLIENT_EXPORT LanguageClientCompletionAssistProcessor
+    : public TextEditor::IAssistProcessor
+{
+public:
+    LanguageClientCompletionAssistProcessor(Client *client,
+                                            const CompletionItemsTransformer &itemsTransformer,
+                                            const CompletionApplyHelper &applyHelper,
+                                            const ProposalHandler &proposalHandler,
+                                            const QString &snippetsGroup);
+    ~LanguageClientCompletionAssistProcessor() override;
+    TextEditor::IAssistProposal *perform(const TextEditor::AssistInterface *interface) override;
+    bool running() override;
+    bool needsRestart() const override { return true; }
+    void cancel() override;
+
+private:
+    void handleCompletionResponse(const LanguageServerProtocol::CompletionRequest::Response &response);
+
+    QPointer<QTextDocument> m_document;
+    Utils::FilePath m_filePath;
+    QPointer<Client> m_client;
+    Utils::optional<LanguageServerProtocol::MessageId> m_currentRequest;
+    QMetaObject::Connection m_postponedUpdateConnection;
+    const CompletionItemsTransformer m_itemsTransformer;
+    const CompletionApplyHelper m_applyHelper;
+    const ProposalHandler m_proposalHandler;
+    const QString m_snippetsGroup;
+    int m_pos = -1;
+    int m_basePos = -1;
+};
+
 } // namespace LanguageClient