diff --git a/Tor-vs-Waku/Anonymous-Transport.md b/Tor-vs-Waku/Anonymous-Transport.md
index e424d68..0717f7f 100644
--- a/Tor-vs-Waku/Anonymous-Transport.md
+++ b/Tor-vs-Waku/Anonymous-Transport.md
@@ -1,6 +1,6 @@
 Below is the summary of my findings up until now. 
 
-# Probelm Definition
+# Problem Definition
 
 This document is going to provide a comparison between  Tor and Waku. The ["What is Tor"](#what-is-tor) section presents a quick overview of the Tor and can be skipped for those that are already familiar.  
 
@@ -297,4 +297,4 @@ Sharing some relevant resources for the record:
 - Sphinx: A Compact and Provably Secure Mix Format
 https://cypherpunks.ca/~iang/pubs/Sphinx_Oakland09.pdf
 - SoK: Secure Messaging (An evaluation framework for the security, usability, and ease-of-adoption of secure messaging solutions)
- https://cacr.uwaterloo.ca/techreports/2015/cacr2015-02.pdf
\ No newline at end of file
+ https://cacr.uwaterloo.ca/techreports/2015/cacr2015-02.pdf