--- trunk/OOPSE/libmdtools/Molecule.cpp	2003/04/07 21:42:19	474
+++ trunk/OOPSE/libmdtools/Molecule.cpp	2003/04/08 12:44:18	475
@@ -166,9 +166,9 @@ void Molecule::getCOM( double COM[3] ) {
  
 }
 
-void Molecule::getCOMvel( double mtot, double COMvel[3] ) {
+double Molecule::getCOMvel( double COMvel[3] ) {
 
-  double mass;
+  double mass, mtot;
   int i;
 
   COMvel[0] = 0.0;
@@ -192,4 +192,6 @@ void Molecule::getCOMvel( double mtot, double COMvel[3
   COMvel[1] /= mtot;
   COMvel[2] /= mtot;
  
+  return mtot;
+
 }