diff --git a/src/core/preset_preview_play_handle.cpp b/src/core/preset_preview_play_handle.cpp
index 94066eced..22ff31a50 100644
--- a/src/core/preset_preview_play_handle.cpp
+++ b/src/core/preset_preview_play_handle.cpp
@@ -105,7 +105,7 @@ private:
 	notePlayHandle * m_previewNote;
 	QMutex m_dataMutex;
 
-	friend presetPreviewPlayHandle;
+	friend class presetPreviewPlayHandle;
 
 } ;