diff --git a/tests/cuda/test_cuda_tridiag.f90 b/tests/cuda/test_cuda_tridiag.f90
index 3b494350..5f44c44e 100644
--- a/tests/cuda/test_cuda_tridiag.f90
+++ b/tests/cuda/test_cuda_tridiag.f90
@@ -194,5 +194,7 @@ program test_cuda_tridiag
       error stop 'SOME TESTS FAILED.'
    end if
 
+   call MPI_Finalize(ierr)
+
 end program test_cuda_tridiag