diff --git a/src/plugins/qmldesigner/documentmanager.h b/src/plugins/qmldesigner/documentmanager.h
index 39ea23d96a1..81d081c2f9b 100644
--- a/src/plugins/qmldesigner/documentmanager.h
+++ b/src/plugins/qmldesigner/documentmanager.h
@@ -42,7 +42,7 @@ class IEditor;
 
 namespace QmlDesigner {
 
-class DocumentManager : public QObject
+class QMLDESIGNERCORE_EXPORT DocumentManager : public QObject
 {
     Q_OBJECT
 public: