diff --git a/tests/test_topology.py b/tests/test_topology.py
index b7644600f..4830ac7be 100644
--- a/tests/test_topology.py
+++ b/tests/test_topology.py
@@ -391,17 +391,17 @@ def setUp(self):
     self.domain0, self.geom = mesh.rectilinear([2]*self.ndims)
     self.domain1 = self.domain0.trim((1.1 - self.geom).sum(), maxrefine=2)
     self.domain2 = self.domain1.refined_by(filter(self.domain1.transforms.contains, self.domain0[:1].transforms))
-    #self.domain3 = self.domain2.refined_by(filter(self.domain2.transforms.contains, self.domain0.refined[:1].transforms))
+    self.domain3 = self.domain2.refined_by(filter(self.domain2.transforms.contains, self.domain0.refined[:1].transforms))
 
   def test_boundaries(self):
     self.assertBoundaries(self.domain1, self.geom)
     self.assertBoundaries(self.domain2, self.geom)
-    #self.assertBoundaries(self.domain3, self.geom)
+    self.assertBoundaries(self.domain3, self.geom)
 
   def test_interfaces(self):
     self.assertInterfaces(self.domain1, self.geom, periodic=False)
     self.assertInterfaces(self.domain2, self.geom, periodic=False)
-    #self.assertInterfaces(self.domain3, self.geom, periodic=False)
+    self.assertInterfaces(self.domain3, self.geom, periodic=False)
 
 trimmedhierarchical('1d', ndims=1)
 trimmedhierarchical('2d', ndims=2)