diff --git a/PR2691618.py b/PR2691618.py
index 6753070..f0a4818 100755
--- a/PR2691618.py
+++ b/PR2691618.py
@@ -89,8 +89,6 @@ def setUp(self):
            {'bo': 1},
            {'bo': 1},
            {'bo': 1}]}
-    def assertInList(self, item, mylist):
-        self.assertTrue(item in mylist, "Item %s not found in %s" % (item, mylist))
     def testIdentity(self):
         self.assertSameMol(self.mol, self.serialised)
     def testRoundTrip(self):
diff --git a/sweet.py b/sweet.py
index 8687113..cedf9af 100755
--- a/sweet.py
+++ b/sweet.py
@@ -61,6 +61,9 @@ def assertInside(self, first, second, error, msg=None):
         if not (second-error) < first < (second+error):
             raise self.failureException, (msg or '%r != %r (+-%r)' % (first,second,error))
 
+    def assertInList(self, item, mylist):
+        self.assertTrue(item in mylist, "Item %s not found in %s" % (item, mylist))
+
     def cont_assertEqual(self, a, b, c):
         """Replace an assertEqual with a cont_assertEqual to allow
         execution of additional tests in the same assertSameMol"""