diff --git a/src/tensormatrix_mpi.cpp b/src/tensormatrix_mpi.cpp
index 47ba29bbbcf4d66e4eda7b598798362717be228d..c7ccf50df5b72a737824535641d040d09b2d2e33 100644
--- a/src/tensormatrix_mpi.cpp
+++ b/src/tensormatrix_mpi.cpp
@@ -213,7 +213,7 @@ int main( int argc, char** argv ){
         MPI_Comm_size( MPI_COMM_WORLD, &size );
         //        std::cout << "Time: ";
         //std::cout << "parallel    " << ( tv_para - tv_start ) / 1e6 << "   ";
-        std::cout << size << "\t" << tostart << "\t" << ( tv_para - tv_start ) / 1e6 << "   ";
+        std::cout << size << "\t" << tostart << "\t" << N << "\t" << ( tv_para - tv_start ) / 1e6 << "   ";
 #if DEBUG
         std::cout << "sequential  " << ( tv_seq - tv_para ) / 1e6 << "   ";
         /* this verification does not work, the manual one (copy-paste in ginsh) works */