diff --git a/pyspod/utils/parallel.py b/pyspod/utils/parallel.py
index beb6587..8733498 100644
--- a/pyspod/utils/parallel.py
+++ b/pyspod/utils/parallel.py
@@ -161,7 +161,7 @@ def _blockdist(N, size, rank):
 def allreduce(data, comm):
     if comm is not None:
         MPI = _get_module_MPI(comm)
-        data = data.newbyteorder('=')
+        data = data.view(data.dtype.newbyteorder('='))
         data_reduced = np.zeros_like(data)
         comm.Barrier()
         comm.Allreduce(data, data_reduced, op=MPI.SUM)