diff --git a/src/channelinfomodel.h b/src/channelinfomodel.h
--- a/src/channelinfomodel.h
+++ b/src/channelinfomodel.h
@@ -31,10 +31,11 @@ public:
     explicit ChannelInfoModel(unsigned numberOfChannels, QObject *parent = 0);
 
     // implemented from QAbstractItemModel
-    int      rowCount(const QModelIndex &parent = QModelIndex()) const;
-    int      columnCount(const QModelIndex &parent = QModelIndex()) const;
-    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
-    bool     setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+    int           rowCount(const QModelIndex &parent = QModelIndex()) const;
+    int           columnCount(const QModelIndex &parent = QModelIndex()) const;
+    QVariant      data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    bool          setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+    Qt::ItemFlags flags(const QModelIndex &index) const;
 
     void setNumOfChannels(unsigned number);