diff --git a/app/fastfileviewer.h b/app/fastfileviewer.h
index 5ffe2e0..32fd722 100644
--- a/app/fastfileviewer.h
+++ b/app/fastfileviewer.h
@@ -1,25 +1,25 @@
-#ifndef FASTFILEVIEWER_H
-#define FASTFILEVIEWER_H
-
-#include "fastfile.h"
-#include <QWidget>
-
-namespace Ui {
-class FFViewer;
-}
-
-class FastFileViewer : public QWidget
-{
-    Q_OBJECT
-
-public:
-    explicit FastFileViewer(QWidget *parent = nullptr);
-    ~FastFileViewer();
-
-    void SetFastFile(std::shared_ptr<FastFile> aFastFile);
-private:
-    Ui::FFViewer *ui;
-    std::shared_ptr<FastFile> mFastFile;
-};
-
-#endif // FASTFILEVIEWER_H
+#ifndef FASTFILEVIEWER_H
+#define FASTFILEVIEWER_H
+
+#include "fastfile.h"
+#include <QWidget>
+
+namespace Ui {
+class FFViewer;
+}
+
+class FastFileViewer : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit FastFileViewer(QWidget *parent = nullptr);
+    ~FastFileViewer();
+
+    void SetFastFile(const FastFile *aFastFile);
+private:
+    Ui::FFViewer *ui;
+    const FastFile* mFastFile;
+};
+
+#endif // FASTFILEVIEWER_H