diff --git a/radicale/tests/test_auth.py b/radicale/tests/test_auth.py
index daf735aa..b66f3ef4 100644
--- a/radicale/tests/test_auth.py
+++ b/radicale/tests/test_auth.py
@@ -69,8 +69,10 @@ class TestBaseAuthRequests(BaseTest):
         with open(htpasswd_file_path, "w", encoding=encoding) as f:
             f.write(htpasswd_content)
         self.configure({"auth": {"type": "htpasswd",
+                                 "delay": 0,
                                  "htpasswd_filename": htpasswd_file_path,
-                                 "htpasswd_encryption": htpasswd_encryption}})
+                                 "htpasswd_encryption": htpasswd_encryption},
+                        "server": {"delay_on_error": 0}})
         if test_matrix == "ascii":
             test_matrix = (("tmp", "bepo", True), ("tmp", "tmp", False),
                            ("tmp", "", False), ("unk", "unk", False),
diff --git a/radicale/tests/test_base.py b/radicale/tests/test_base.py
index 4eee5c05..7f37542e 100644
--- a/radicale/tests/test_base.py
+++ b/radicale/tests/test_base.py
@@ -73,6 +73,7 @@ collection: .*
 permissions: RrWw""")
         self.configure({"rights": {"file": rights_file_path,
                                    "type": "from_file"},
+                        "server": {"delay_on_error": 0},
                         "logging": {"request_header_on_debug": "True",
                                     "request_content_on_debug": "True",
                                     "response_header_on_debug": "True",