diff --git a/src/postorius/tests/utils.py b/src/postorius/tests/utils.py
index a0b8c29..8d6ac46 100644
--- a/src/postorius/tests/utils.py
+++ b/src/postorius/tests/utils.py
@@ -114,13 +114,17 @@
     def assertHasSuccessMessage(self, response):
         msgs = get_flash_messages(response)
         self.assertEqual(len(msgs), 1)
-        self.assertEqual(msgs[0].level, messages.SUCCESS, msgs[0].message)
+        self.assertEqual(
+            msgs[0].level, messages.SUCCESS,
+            "%s: %s" % (messages.DEFAULT_TAGS[msgs[0].level], msgs[0].message))
         return msgs[0].message
 
     def assertHasErrorMessage(self, response):
         msgs = get_flash_messages(response)
         self.assertEqual(len(msgs), 1)
-        self.assertEqual(msgs[0].level, messages.ERROR, msgs[0].message)
+        self.assertEqual(
+            msgs[0].level, messages.ERROR,
+            "%s: %s" % (messages.DEFAULT_TAGS[msgs[0].level], msgs[0].message))
         return msgs[0].message
 
     def assertHasNoMessage(self, response):