diff --git a/tests/conftest.py b/tests/conftest.py
index 976be6c..2a9a466 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -125,12 +125,12 @@ def _fixture_dir(name: str) -> Path:
 
 @pytest.fixture()
 def repo() -> Repository:
-    return Repository()
+    return Repository("repo")
 
 
 @pytest.fixture
 def installed() -> Repository:
-    return Repository()
+    return Repository("installed")
 
 
 @pytest.fixture(scope="session")
diff --git a/tests/test_exporter.py b/tests/test_exporter.py
index 3eca09a..fe6fca8 100644
--- a/tests/test_exporter.py
+++ b/tests/test_exporter.py
@@ -1724,13 +1724,13 @@ def test_exporter_exports_requirements_txt_with_legacy_packages_and_duplicate_so
 ) -> None:
     poetry.pool.add_repository(
         LegacyRepository(
-            "custom",
+            "custom-example",
             "https://example.com/simple",
         )
     )
     poetry.pool.add_repository(
         LegacyRepository(
-            "custom",
+            "custom-foobaz",
             "https://foobaz.com/simple",
         )
     )