diff --git a/engines/axwchessbot/conftest.py b/engines/axwchessbot/conftest.py
index cc4ec91..b9cfc49 100644
--- a/engines/axwchessbot/conftest.py
+++ b/engines/axwchessbot/conftest.py
@@ -8,7 +8,9 @@ def pytest_addoption(parser):
 
 
 def pytest_configure(config):
-    config.addinivalue_line("markers", "slow: mark test as slow to run")
+    config.addinivalue_line(
+        "markers", "slow: mark test as slow to run (use --runslow to run)"
+    )
 
 
 def pytest_collection_modifyitems(config, items):