diff --git a/lab12/exc4/jacobi.cpp b/lab12/exc4/jacobi.cpp
index 5164a97..be3ca9d 100644
--- a/lab12/exc4/jacobi.cpp
+++ b/lab12/exc4/jacobi.cpp
@@ -101,7 +101,7 @@ void Jacobi::exchangeHaloLayersNodeMPIProcFirst(Matrix &phi)
 
     while (states->shmStates[0] == SharedmemState::Unread)
     {
-      if (rank_ == 0)
+      if (rank_ == (n - 1))
         std::cout << "102" << std::endl;
       MPI_Win_sync(win_);}