diff --git a/pyproject.toml b/pyproject.toml
index 61c214d..47b40c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ markers = [
     "integration: integration tests (requires RUN_INTEGRATION=1)",
     "e2e: end-to-end tests with real daemon + Agent (requires RUN_INTEGRATION=1)",
 ]
-addopts = "-m 'not integration and not e2e'"
+addopts = "-m not integration and not e2e"
 
 [tool.pyright]
 venvPath = "."
diff --git a/tests/conftest.py b/tests/conftest.py
index ba0bd54..1eca4f9 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -21,6 +21,10 @@ def pytest_configure(config):
     for name, desc in markers.items():
         config.addinivalue_line("markers", f"{name}: {desc}")
 
+    # When RUN_INTEGRATION=1, remove default marker filter so integration/e2e tests run
+    if os.environ.get("RUN_INTEGRATION"):
+        config.known_args_namespace.markexpr = ""
+
 
 @pytest.fixture
 def isolated_data_root(tmp_path):