diff --git a/tools/dimacs-to-lgf.cc b/tools/dimacs-to-lgf.cc
--- a/tools/dimacs-to-lgf.cc
+++ b/tools/dimacs-to-lgf.cc
@@ -96,7 +96,7 @@
         Digraph digraph;
         DoubleArcMap lower(digraph), capacity(digraph), cost(digraph);
         DoubleNodeMap supply(digraph);
-        readDimacsMin(is, digraph, lower, capacity, cost, supply, desc);
+        readDimacsMin(is, digraph, lower, capacity, cost, supply, 0, desc);
         DigraphWriter<Digraph>(digraph, os).
           nodeMap("supply", supply).
           arcMap("lower", lower).
@@ -111,7 +111,7 @@
         Digraph digraph;
         Node s, t;
         DoubleArcMap capacity(digraph);
-        readDimacsMax(is, digraph, capacity, s, t, desc);
+        readDimacsMax(is, digraph, capacity, s, t, 0, desc);
         DigraphWriter<Digraph>(digraph, os).
           arcMap("capacity", capacity).
           node("source", s).