diff --git a/meshmode/discretization/connection/__init__.py b/meshmode/discretization/connection/__init__.py
index b18c758053cce3542695d44058404a9d719983fb..4cad16c9136492e8bd8c4a25982a6ac428448e7c 100644
--- a/meshmode/discretization/connection/__init__.py
+++ b/meshmode/discretization/connection/__init__.py
@@ -409,7 +409,7 @@ class DiscretizationConnection(object):
 # {{{ check connection
 
 def check_connection(connection):
-    from_discr = connection.to_discr
+    from_discr = connection.from_discr
     to_discr = connection.to_discr
 
     assert len(connection.groups) == len(to_discr.groups)