diff --git a/fire/helputils_test.py b/fire/helputils_test.py
index 4bc8acc9..3076d606 100644
--- a/fire/helputils_test.py
+++ b/fire/helputils_test.py
@@ -21,6 +21,7 @@
 import six
 
 import unittest
+import os
 
 
 class HelpUtilsTest(unittest.TestCase):
@@ -120,7 +121,7 @@ def testHelpClassNoInit(self):
       self.assertIn('Type:        type\n', helpstring)
     self.assertIn('String form: ', helpstring)
     self.assertIn('fire.test_components.OldStyleEmpty', helpstring)
-    self.assertIn('fire/test_components.py\n', helpstring)
+    self.assertIn(os.path.join('fire', 'test_components.py'), helpstring)
     self.assertIn('Line:        ', helpstring)
 
 
diff --git a/fire/inspectutils_test.py b/fire/inspectutils_test.py
index 16ab98cf..db7825dd 100644
--- a/fire/inspectutils_test.py
+++ b/fire/inspectutils_test.py
@@ -18,6 +18,7 @@
 
 import unittest
 import six
+import os
 
 from fire import inspectutils
 from fire import test_components as tc
@@ -97,7 +98,7 @@ def testInfoOne(self):
   def testInfoClass(self):
     info = inspectutils.Info(tc.NoDefaults)
     self.assertEqual(info.get('type_name'), 'type')
-    self.assertIn('fire/test_components.py', info.get('file'))
+    self.assertIn(os.path.join('fire', 'test_components.py'), info.get('file'))
     self.assertGreater(info.get('line'), 0)
 
   def testInfoClassNoInit(self):
@@ -106,7 +107,7 @@ def testInfoClassNoInit(self):
       self.assertEqual(info.get('type_name'), 'classobj')
     else:
       self.assertEqual(info.get('type_name'), 'type')
-    self.assertIn('fire/test_components.py', info.get('file'))
+    self.assertIn(os.path.join('fire', 'test_components.py'), info.get('file'))
     self.assertGreater(info.get('line'), 0)