diff --git a/tests/abstract_test.py b/tests/abstract_test.py
index 378c38f..a9ac4a7 100644
--- a/tests/abstract_test.py
+++ b/tests/abstract_test.py
@@ -17,5 +17,7 @@ class AbstractBlendFileTest(unittest.TestCase):
         self.bf = None
 
     def tearDown(self):
+        if self.bf is not None:
+            self.bf.close()
         self.bf = None
         blendfile.close_all_cached()
diff --git a/tests/test_blendfile_loading.py b/tests/test_blendfile_loading.py
index 74c65fb..02f36af 100644
--- a/tests/test_blendfile_loading.py
+++ b/tests/test_blendfile_loading.py
@@ -293,6 +293,7 @@ class BlendFileCacheTest(AbstractBlendFileTest):
         self.tpath = pathlib.Path(self.tdir.name)
 
     def tearDown(self):
+        super().tearDown()
         self.tdir.cleanup()
 
     def test_open_cached(self):