diff --git a/common/lib/xmodule/xmodule/tests/__init__.py b/common/lib/xmodule/xmodule/tests/__init__.py
index a7533107cd93fa4c0400d900e2add6df283dc895..a1c8322616bcdf114e14822c3ac1b8dee9314833 100644
--- a/common/lib/xmodule/xmodule/tests/__init__.py
+++ b/common/lib/xmodule/xmodule/tests/__init__.py
@@ -16,7 +16,7 @@ import pprint
 import sys
 import traceback
 import unittest
-from contextlib import contextmanager, nested
+from contextlib import contextmanager
 from functools import wraps
 
 import six
diff --git a/lms/djangoapps/shoppingcart/tests/test_reports.py b/lms/djangoapps/shoppingcart/tests/test_reports.py
index 8b5a42688e575dcd74a3eb535300d27a77b289e1..002b936926b8afa6559668cb502bba0aba063fab 100644
--- a/lms/djangoapps/shoppingcart/tests/test_reports.py
+++ b/lms/djangoapps/shoppingcart/tests/test_reports.py
@@ -108,11 +108,11 @@ class ReportTypeTests(ModuleStoreTestCase):
         second_refund.refund_requested_time = self.test_time
         second_refund.save()
 
-        self.CORRECT_REFUND_REPORT_CSV = dedent(b"""
+        self.CORRECT_REFUND_REPORT_CSV = dedent(u"""
             Order Number,Customer Name,Date of Original Transaction,Date of Refund,Amount of Refund,Service Fees (if any)
             3,King Bowsér,{time_str},{time_str},40.00,0.00
             4,Súsan Smith,{time_str},{time_str},40.00,0.00
-            """.format(time_str=str(self.test_time)))
+            """.format(time_str=str(self.test_time))).encode('utf-8')
 
         self.CORRECT_CERT_STATUS_CSV = dedent("""
             University,Course,Course Announce Date,Course Start Date,Course Registration Close Date,Course Registration Period,Total Enrolled,Audit Enrollment,Honor Code Enrollment,Verified Enrollment,Gross Revenue,Gross Revenue over the Minimum,Number of Verified Students Contributing More than the Minimum,Number of Refunds,Dollars Refunded