diff --git a/core/imagedownloader.h b/core/imagedownloader.h
index 3c316a2f6..fe0a9631b 100644
--- a/core/imagedownloader.h
+++ b/core/imagedownloader.h
@@ -23,7 +23,7 @@ private:
 	void saveImage(QNetworkReply *reply);
 };
 
-class PictureEntry;
+struct PictureEntry;
 class Thumbnailer : public QObject {
 	Q_OBJECT
 public: