diff --git a/tests/test_helpers.py b/tests/test_helpers.py
index 8e16331..2894e18 100644
--- a/tests/test_helpers.py
+++ b/tests/test_helpers.py
@@ -86,21 +86,15 @@ def test_flag_detector_stream_persistence():
     """
     from io import StringIO
     from ctf.helpers import FlagDetectorStream
-    from ctf.config import load_config, write_config
+    from ctf.config import Config
     
-    config_file = Path("/home/venus/code/ctf/config.toml")
-    original_config = load_config(str(config_file))
+    out = StringIO()
+    stream = FlagDetectorStream(out, r"flag\{[a-z_]+\}")
+    stream.write("found flag{persisted_flag} in stdout")
     
-    try:
-        out = StringIO()
-        stream = FlagDetectorStream(out, r"flag\{[a-z_]+\}")
-        stream.write("found flag{persisted_flag} in stdout")
-        
-        # Reload config and check last_flag
-        updated_config = load_config(str(config_file))
-        assert updated_config.get("Competition", {}).get("last_flag") == "flag{persisted_flag}"
-    finally:
-        write_config(original_config, str(config_file))
+    # Reload config and check last_flag
+    cfg = Config()
+    assert cfg.data.get("Competition", {}).get("last_flag") == "flag{persisted_flag}"
 # }}}