diff --git a/src/services/abstract/recyclebin.h b/src/services/abstract/recyclebin.h
index ef347b010..da81745f6 100644
--- a/src/services/abstract/recyclebin.h
+++ b/src/services/abstract/recyclebin.h
@@ -30,7 +30,12 @@ class RecycleBin : public RootItem {
 
     QVariant data(int column, int role) const;
 
+    // Empties the bin - removes all messages from it (does not remove
+    // them from DB, just permanently hide them, so that they are not
+    // re-downloaded).
     virtual bool empty() = 0;
+
+    // Performs complete restoration of all messages contained in the bin
     virtual bool restore() = 0;
 };