diff --git a/make_post_sell/request_methods.py b/make_post_sell/request_methods.py
index 9af9ac3..e52ae31 100644
--- a/make_post_sell/request_methods.py
+++ b/make_post_sell/request_methods.py
@@ -110,7 +110,7 @@ def includeme(config):
         from pyramid.httpexceptions import HTTPUnauthorized
 
         # Regex to detect nested encoded 'next=' patterns
-        next_pattern = re.compile(r"(next%25)+", re.IGNORECASE)
+        next_pattern = re.compile(r"(next(?:%25|%3D))+", re.IGNORECASE)
         matches = next_pattern.findall(request.query_string)
 
         if len(matches) > 1: