diff --git a/tests/test_database.py b/tests/test_database.py
index c563862..2a50590 100644
--- a/tests/test_database.py
+++ b/tests/test_database.py
@@ -150,7 +150,7 @@ class DatabaseTestCase(TestCaseWithData):
 
         exc = cm.exception
         self.assertEqual(exc.code, 193)
-        self.assertEqual(exc.message, 'Wrong password for user default')
+        self.assertTrue(exc.message.startswith('Wrong password for user default'))
 
     def test_nonexisting_db(self):
         db = Database('db_not_here', autocreate=False)
@@ -158,7 +158,7 @@ class DatabaseTestCase(TestCaseWithData):
             db.create_table(Person)
         exc = cm.exception
         self.assertEqual(exc.code, 81)
-        self.assertEqual(exc.message, "Database db_not_here doesn't exist")
+        self.assertTrue(exc.message.startswith("Database db_not_here doesn't exist"))
         # Create and delete the db twice, to ensure db_exists gets updated
         for i in range(2):
             # Now create the database - should succeed
diff --git a/tests/test_engines.py b/tests/test_engines.py
index 7e29426..846e825 100644
--- a/tests/test_engines.py
+++ b/tests/test_engines.py
@@ -209,7 +209,7 @@ class DistributedTestCase(_EnginesHelperTestCase):
 
         exc = cm.exception
         self.assertEqual(exc.code, 170)
-        self.assertEqual(exc.message, "Requested cluster 'cluster_name' not found")
+        self.assertTrue(exc.message.startswith("Requested cluster 'cluster_name' not found"))
 
     def test_verbose_engine_two_superclasses(self):
         class TestModel2(SampleModel):
diff --git a/tests/test_readonly.py b/tests/test_readonly.py
index b9333af..816c701 100644
--- a/tests/test_readonly.py
+++ b/tests/test_readonly.py
@@ -36,9 +36,9 @@ class ReadonlyTestCase(TestCaseWithData):
     def _check_db_readonly_err(self, exc, drop_table=None):
         self.assertEqual(exc.code, 164)
         if drop_table:
-            self.assertEqual(exc.message, 'Cannot drop table in readonly mode')
+            self.assertTrue(exc.message.startswith('Cannot drop table in readonly mode'))
         else:
-            self.assertEqual(exc.message, 'Cannot insert into table in readonly mode')
+            self.assertTrue(exc.message.startswith('Cannot insert into table in readonly mode'))
 
     def test_readonly_db_with_default_user(self):
         self._test_readonly_db('default')