From 3ee642c4bcc9502419f6c733152052a73d9c2cfc Mon Sep 17 00:00:00 2001
From: Benjamin Rodenberg <benjamin.rueth@tum.de>
Date: Wed, 23 Dec 2020 18:26:26 +0100
Subject: [PATCH] Fix wrong function call

---
 fenicsprecice/expression_core.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fenicsprecice/expression_core.py b/fenicsprecice/expression_core.py
index b8fb29b0..b794a013 100644
--- a/fenicsprecice/expression_core.py
+++ b/fenicsprecice/expression_core.py
@@ -242,7 +242,7 @@ def eval(self, value, x):
         :param x: coordinate where expression has to be evaluated
         :param value: buffer where result has to be returned to
         """
-        assert(MPI.size(MPI.comm_world) > 1)
+        assert(MPI.COMM_WORLD.Get_size() > 1)
         for i in range(self._vals.ndim):
             value[i] = 0