diff --git a/OpenSSL/test/test_crypto.py b/OpenSSL/test/test_crypto.py
index 8386d2c..ac99ce0 100644
--- a/OpenSSL/test/test_crypto.py
+++ b/OpenSSL/test/test_crypto.py
@@ -2004,7 +2004,7 @@
 
     def test_get_type_name(self):
         pkcs7 = load_pkcs7_data(FILETYPE_PEM, pkcs7Data)
-        self.assertEquals(pkcs7.get_type_name(), 'pkcs7-signedData')
+        self.assertEquals(pkcs7.get_type_name(), b('pkcs7-signedData'))
 
 
     def test_attribute(self):