diff --git a/latex/presentations/final/sections/proximal_decoding.tex b/latex/presentations/final/sections/proximal_decoding.tex
index 8199780..8cbc6c4 100644
--- a/latex/presentations/final/sections/proximal_decoding.tex
+++ b/latex/presentations/final/sections/proximal_decoding.tex
@@ -214,7 +214,7 @@ return $\boldsymbol{\hat{c}}$
         Codes}. IEICE Transactions on Fundamentals of Electronics, Communications and Computer
         Sciences advpub (2022), 2022TAP0002.}
     \addreference{Mac23}{David J.C. MacKay: \emph{Encyclopedia of Sparse Graph Codes}.
-        Jan. 2023. URL: \url{http://www.inference.org.uk/mackay/codes/data.html}}.
+        Jan. 2023. URL: \url{http://www.inference.org.uk/mackay/codes/data.html}}
 \end{frame}
 
 
@@ -301,7 +301,7 @@ return $\boldsymbol{\hat{c}}$
     \bigskip
 
     \addreference{Mac23}{David J.C. MacKay: \emph{Encyclopedia of Sparse Graph Codes}.
-        Jan. 2023. URL: \url{http://www.inference.org.uk/mackay/codes/data.html}}.
+        Jan. 2023. URL: \url{http://www.inference.org.uk/mackay/codes/data.html}}
 
 \end{frame}