diff --git a/STSP.md b/STSP.md
index 7436298..bcd64d8 100644
--- a/STSP.md
+++ b/STSP.md
@@ -1,6 +1,6 @@
 # Stateless Time Scrambling Protocol
 
-$T_S = S^2$
+$$T_S = S^2$$
 
 
 ## Motivation