--- trunk/OOPSE/libmdtools/Thermo.cpp	2003/07/15 14:45:09	608
+++ trunk/OOPSE/libmdtools/Thermo.cpp	2003/07/15 17:10:50	611
@@ -217,13 +217,12 @@ void Thermo::getPressureTensor(double press[3][3]){
   }
 #endif // is_mpi
 
-  volume = entry_plug->boxVol;
+  volume = this->getVolume();
 
   for(i = 0; i < 3; i++) {
     for (j = 0; j < 3; j++) {
       k = 3*i + j;
-      l = 3*j + i;
-      press[i][j] = (p_global[k] - entry_plug->tau[l]*e_convert) / volume;
+      press[i][j] = (p_global[k] + entry_plug->tau[k]*e_convert) / volume;
     }
   }
 }