diff --git a/apps/reader/views.py b/apps/reader/views.py
index 24baae2212..74e6db3fc9 100644
--- a/apps/reader/views.py
+++ b/apps/reader/views.py
@@ -174,11 +174,14 @@
 
 
 def get_subdomain(request):
+    if hasattr(request, "subdomain"):
+        return request.subdomain
     host = request.META.get("HTTP_HOST")
     if host and host.count(".") >= 2:
         return host.split(".")[0]
     else:
         return None
+        return None
 
 
 def adjust_read_filter_for_date_range(