diff --git a/src/plugins/languageclient/client.h b/src/plugins/languageclient/client.h
index e35afd08906..ab874e8569c 100644
--- a/src/plugins/languageclient/client.h
+++ b/src/plugins/languageclient/client.h
@@ -27,6 +27,7 @@
 
 #include "documentsymbolcache.h"
 #include "dynamiccapabilities.h"
+#include "languageclient_global.h"
 #include "languageclientcompletionassist.h"
 #include "languageclientfunctionhint.h"
 #include "languageclientquickfix.h"
@@ -67,7 +68,7 @@ namespace LanguageClient {
 class BaseClientInterface;
 class TextMark;
 
-class Client : public QObject
+class LANGUAGECLIENT_EXPORT Client : public QObject
 {
     Q_OBJECT
 
diff --git a/src/plugins/languageclient/languageclient_global.h b/src/plugins/languageclient/languageclient_global.h
index 685379804df..7df176603fd 100644
--- a/src/plugins/languageclient/languageclient_global.h
+++ b/src/plugins/languageclient/languageclient_global.h
@@ -27,6 +27,12 @@
 
 #include <QtGlobal>
 
+#if defined(LANGUAGECLIENT_LIBRARY)
+#  define LANGUAGECLIENT_EXPORT Q_DECL_EXPORT
+#else
+#  define LANGUAGECLIENT_EXPORT Q_DECL_IMPORT
+#endif
+
 namespace LanguageClient {
 namespace Constants {
 
diff --git a/src/plugins/languageclient/languageclientmanager.h b/src/plugins/languageclient/languageclientmanager.h
index 8c03eaa26bf..2b9542dc48a 100644
--- a/src/plugins/languageclient/languageclientmanager.h
+++ b/src/plugins/languageclient/languageclientmanager.h
@@ -26,6 +26,7 @@
 #pragma once
 
 #include "client.h"
+#include "languageclient_global.h"
 #include "languageclientsettings.h"
 #include "locatorfilter.h"
 
@@ -46,7 +47,7 @@ namespace LanguageClient {
 
 class LanguageClientMark;
 
-class LanguageClientManager : public QObject
+class LANGUAGECLIENT_EXPORT LanguageClientManager : public QObject
 {
     Q_OBJECT
 public:
diff --git a/src/plugins/languageclient/languageclientsettings.h b/src/plugins/languageclient/languageclientsettings.h
index 348e1d293c5..79657409cf0 100644
--- a/src/plugins/languageclient/languageclientsettings.h
+++ b/src/plugins/languageclient/languageclientsettings.h
@@ -25,6 +25,8 @@
 
 #pragma once
 
+#include "languageclient_global.h"
+
 #include <coreplugin/dialogs/ioptionspage.h>
 
 #include <QAbstractItemModel>
@@ -51,7 +53,7 @@ namespace LanguageClient {
 class Client;
 class BaseClientInterface;
 
-struct LanguageFilter
+struct LANGUAGECLIENT_EXPORT LanguageFilter
 {
     QStringList mimeTypes;
     QStringList filePattern;
@@ -59,7 +61,7 @@ struct LanguageFilter
     bool isSupported(const Core::IDocument *document) const;
 };
 
-class BaseSettings
+class LANGUAGECLIENT_EXPORT BaseSettings
 {
 public:
     BaseSettings() = default;
@@ -100,7 +102,7 @@ private:
     bool canStart(QList<const Core::IDocument *> documents) const;
 };
 
-class StdIOSettings : public BaseSettings
+class LANGUAGECLIENT_EXPORT StdIOSettings : public BaseSettings
 {
 public:
     StdIOSettings() = default;