diff --git a/tests/conftest.py b/tests/conftest.py
index 33e9431..616581f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -140,6 +140,17 @@ def test_db(tmp_path):
     conn.close()
 
 
+@pytest.fixture(autouse=True)
+def _isolate_tle_store(tmp_path, monkeypatch):
+    """Every test gets a throwaway TLE store; nothing touches instance/tle.db."""
+    from utils import tle_store
+
+    monkeypatch.setattr(tle_store, "_DB_PATH", tmp_path / "tle.db")
+    tle_store._reset_for_tests()
+    yield
+    tle_store._reset_for_tests()
+
+
 @pytest.fixture
 def fake_process():
     """Factory for complete subprocess.Popen replacements.
diff --git a/tests/test_satellite.py b/tests/test_satellite.py
index 0670a6e..e451496 100644
--- a/tests/test_satellite.py
+++ b/tests/test_satellite.py
@@ -8,17 +8,6 @@ from flask import Flask
 from routes.satellite import satellite_bp
 
 
-@pytest.fixture(autouse=True)
-def _isolate_tle_state(tmp_path, monkeypatch):
-    """Point the TLE store at a throwaway DB so tests never touch real data."""
-    from utils import tle_store
-
-    monkeypatch.setattr(tle_store, "_DB_PATH", tmp_path / "tle.db")
-    tle_store._reset_for_tests()
-    yield
-    tle_store._reset_for_tests()
-
-
 @pytest.fixture
 def app():
     app = Flask(__name__)