diff --git a/src/route/routing-table-calculator.hpp b/src/route/routing-table-calculator.hpp
index 7158fd6..6024fbd 100644
--- a/src/route/routing-table-calculator.hpp
+++ b/src/route/routing-table-calculator.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014-2017,  The University of Memphis,
+ * Copyright (c) 2014-2018,  The University of Memphis,
  *                           Regents of the University of California
  *
  * This file is part of NLSR (Named-data Link State Routing).
@@ -61,10 +61,10 @@
     \param pMap The map to populate with the adj. data.
   */
   void
-  makeAdjMatrix(Nlsr& pnlsr, Map pMap);
+  makeAdjMatrix(Nlsr& pnlsr, Map& pMap);
 
   void
-  writeAdjMatrixLog();
+  writeAdjMatrixLog(const Map& map) const;
 
   /*! \brief Returns how many links a router in the matrix has.
     \param sRouter The router to count the links of.