diff --git a/web/main/test/test_export.py b/web/main/test/test_export.py
index 7e2e3c6be..cad8e94c8 100644
--- a/web/main/test/test_export.py
+++ b/web/main/test/test_export.py
@@ -370,35 +370,31 @@ def test_annotated_export_invalid_clamped(annotations_factory):
 
 
 def test_disallowed_images_stripped(rf, text_block_factory, resource_factory):
-    request = rf.get('/spoof-export-request')
+    request = rf.get("/spoof-export-request")
 
-    disallowed_srcs = [
-        '/etc/hosts',
-        '../../images/foo',
-        'http://example.com'
-    ]
+    disallowed_srcs = ["/etc/hosts", "../../images/foo", "http://example.com"]
 
     allowed_srcs = [
         f"http://{request.get_host()}/foo",
         f"https://{request.get_host()}/foo",
     ]
 
-    text = ''
+    text = ""
     for src in itertools.chain(disallowed_srcs, allowed_srcs):
         text = text + f'<img src="{src}">'
 
     text_block = text_block_factory(content=text)
-    resource = resource_factory(resource=text_block, resource_type='TextBlock')
+    resource = resource_factory(resource=text_block, resource_type="TextBlock")
 
     # Establish that all images are present in the unaltered HTML
-    unaltered_html = resource.export(False, None, file_type='html')
+    unaltered_html = resource.export(False, None, file_type="html")
     for src in itertools.chain(disallowed_srcs, allowed_srcs):
         assert src in unaltered_html
 
     # Provide a spoofed `request` object which is a required argument for proper export of rich text
     # https://github.com/harvard-lil/h2o/blob/dd67276720fe3a7af7e110da958448399a92399f/web/main/utils.py#L282
     # Then, establish that only allowed image sources are present.
-    html = resource.export(False, None, file_type='html', export_options={"request": request})
+    html = resource.export(False, None, file_type="html", export_options={"request": request})
     for src in disallowed_srcs:
         assert src not in html
     for src in allowed_srcs: