diff --git a/content/CSE5313/CSE5313_L5.md b/content/CSE5313/CSE5313_L5.md
index 147715e..d68e525 100644
--- a/content/CSE5313/CSE5313_L5.md
+++ b/content/CSE5313/CSE5313_L5.md
@@ -220,7 +220,7 @@ Corollary:
 <details>
 <summary>Example</summary>
 
-Build $F_16=\mathbb{Z}_2[\zeta] \mod \zeta^4+\zeta+1$.
+Build $F_{16}=\mathbb{Z}_2[\zeta] \mod \zeta^4+\zeta+1$.
 
 The elements are: