diff --git a/tests/test_connect.py b/tests/test_connect.py
index 049aea26..89c4d2bb 100644
--- a/tests/test_connect.py
+++ b/tests/test_connect.py
@@ -563,6 +563,19 @@ class TestConnectParams(tb.TestCase):
                 'target_session_attrs': 'any'})
         },
 
+        {
+            'name': 'dsn_bad_characters_maybe',
+            'dsn': 'postgres://eoapi:a2Vw%3Ayk%3D%29CdSis%5Bfek%5DtW%3D%2Fo@eoapi-primary.default.svc:5432/eoapi',
+            'result': ([('eoapi-primary.default.svc', 5432)], {
+                'user': 'eoapi',
+                'password': 'a2Vw:yk=)CdSis[fek]tW=/o',
+                'database': 'eoapi',
+                'ssl': True,
+                'sslmode': SSLMode.prefer
+                ,
+                'target_session_attrs': 'any'})
+        },
+
         {
             'name': 'params_override_env_and_dsn_ssl_prefer',
             'env': {
@@ -1169,6 +1182,7 @@ def test_test_connect_params_run_testcase(self):
 
     def test_connect_params(self):
         for testcase in self.TESTS:
+            print(testcase)
             self.run_testcase(testcase)
 
     def test_connect_pgpass_regular(self):