diff --git a/modules/block_requests.py b/modules/block_requests.py
index e95cd7e2..1bfa9a99 100644
--- a/modules/block_requests.py
+++ b/modules/block_requests.py
@@ -44,7 +44,7 @@ def my_open(*args, **kwargs):
             file_contents = f.read()
 
         file_contents = file_contents.replace('\t\t<script\n\t\t\tsrc="https://cdnjs.cloudflare.com/ajax/libs/iframe-resizer/4.3.9/iframeResizer.contentWindow.min.js"\n\t\t\tasync\n\t\t></script>', '')
-        file_contents = file_contents.replace('cdnjs.cloudflare.com', b'127.0.0.1')
+        file_contents = file_contents.replace('cdnjs.cloudflare.com', '127.0.0.1')
         file_contents = file_contents.replace(
             '</head>',
             '\n    <script src="file/js/katex/katex.min.js"></script>'