diff --git a/bookwyrm/views/reading.py b/bookwyrm/views/reading.py
index 587c0d8d9..42e8d560a 100644
--- a/bookwyrm/views/reading.py
+++ b/bookwyrm/views/reading.py
@@ -43,7 +43,7 @@ class ReadingStatus(View):
     @transaction.atomic
     def post(self, request, status, book_id):
         """Change the state of a book by shelving it and adding reading dates"""
-        next_step = request.META.get('HTTP_REFERER')
+        next_step = request.META.get("HTTP_REFERER")
         next_step = validate_url_domain(next_step, "/")
         identifier = {
             "want": models.Shelf.TO_READ,
diff --git a/bookwyrm/views/shelf/shelf_actions.py b/bookwyrm/views/shelf/shelf_actions.py
index da86cc853..b597bd35f 100644
--- a/bookwyrm/views/shelf/shelf_actions.py
+++ b/bookwyrm/views/shelf/shelf_actions.py
@@ -36,7 +36,7 @@ def delete_shelf(request, shelf_id):
 @transaction.atomic
 def shelve(request):
     """put a book on a user's shelf"""
-    next_step = request.META.get('HTTP_REFERER')
+    next_step = request.META.get("HTTP_REFERER")
     next_step = validate_url_domain(next_step, "/")
     book = get_object_or_404(models.Edition, id=request.POST.get("book"))
     desired_shelf = get_object_or_404(
@@ -98,7 +98,7 @@ def shelve(request):
 @require_POST
 def unshelve(request, book_id=False):
     """remove a book from a user's shelf"""
-    next_step = request.META.get('HTTP_REFERER')
+    next_step = request.META.get("HTTP_REFERER")
     next_step = validate_url_domain(next_step, "/")
     identity = book_id if book_id else request.POST.get("book")
     book = get_object_or_404(models.Edition, id=identity)
diff --git a/bookwyrm/views/status.py b/bookwyrm/views/status.py
index f703f8b77..52f547cdd 100644
--- a/bookwyrm/views/status.py
+++ b/bookwyrm/views/status.py
@@ -59,7 +59,7 @@ class CreateStatus(View):
     # pylint: disable=too-many-branches
     def post(self, request, status_type, existing_status_id=None):
         """create status of whatever type"""
-        next_step = request.META.get('HTTP_REFERER')
+        next_step = request.META.get("HTTP_REFERER")
         next_step = validate_url_domain(next_step, "/")
         created = not existing_status_id
         existing_status = None
@@ -170,7 +170,7 @@ def update_progress(request, book_id):  # pylint: disable=unused-argument
 def edit_readthrough(request):
     """can't use the form because the dates are too finnicky"""
     # TODO: remove this, it duplicates the code in the ReadThrough view
-    next_step = request.META.get('HTTP_REFERER')
+    next_step = request.META.get("HTTP_REFERER")
     next_step = validate_url_domain(next_step, "/")
     readthrough = get_object_or_404(models.ReadThrough, id=request.POST.get("id"))