diff --git a/meshmode/discretization/__init__.py b/meshmode/discretization/__init__.py
index 70a93798f388f45a5e4f40d0b4836a9b4589a81d..9340a982c6924fd1eac3982f364ab5009fd643ca 100644
--- a/meshmode/discretization/__init__.py
+++ b/meshmode/discretization/__init__.py
@@ -357,7 +357,8 @@ class Discretization(object):
             return knl
 
         with cl.CommandQueue(self.cl_context) as queue:
-            result = self.empty(queue=queue, dtype=self.real_dtype, extra_dims=(self.ambient_dim,))
+            result = self.empty(queue=queue, dtype=self.real_dtype,
+                                extra_dims=(self.ambient_dim,))
             for grp in self.groups:
                 if grp.nelements == 0:
                     continue