diff --git a/src/video/previewmanager.h b/src/video/previewmanager.h
index a0a14c839e51d317bac33add6cc353efcb8044a0..cd72dd218ebe409c2836aa00bce53ce063911afc 100644
--- a/src/video/previewmanager.h
+++ b/src/video/previewmanager.h
@@ -35,6 +35,8 @@ class LIB_EXPORT PreviewManager : public QObject
    Q_OBJECT
 
 public:
+    Q_PROPERTY(bool previewing READ isPreviewing NOTIFY previewStateChanged)
+
    //Singleton
    static PreviewManager& instance();