From 78c34b948e99c0d56297e1679ebc89789a6130f8 Mon Sep 17 00:00:00 2001
From: Eugene Shalygin <eugene.shalygin@gmail.com>
Date: Thu, 18 May 2017 15:16:52 +0200
Subject: [PATCH] Fix build error.

---
 src/gui/categoryfilterproxymodel.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gui/categoryfilterproxymodel.h b/src/gui/categoryfilterproxymodel.h
index 1b1b2484a..2bdeb95e1 100644
--- a/src/gui/categoryfilterproxymodel.h
+++ b/src/gui/categoryfilterproxymodel.h
@@ -43,6 +43,10 @@ public:
 
 protected:
     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
+
+private:
+    // we added another overload of index(), hence this using directive:
+    using QSortFilterProxyModel::index;
 };
 
 #endif // CATEGORYFILTERPROXYMODEL_H