diff --git a/protocol/protocol.tex b/protocol/protocol.tex
index 5965faab..6aaa4abf 100644
--- a/protocol/protocol.tex
+++ b/protocol/protocol.tex
@@ -3618,7 +3618,7 @@ The errors in the proof of Ledger Indistinguishability mentioned in
 
 \begin{itemize}
     \item Correct the omission of $\solutionSize$ from the \blockHeader format.
-    \item Document that \compactSize encodings must be canonical.
+    \item Document that \compactSize{} encodings must be canonical.
     \item Add a note about conformance language in the introduction.
     \item Add acknowledgements for Solar Designer, Ling Ren and Alison Stevenson,
           and for the NCC Group and Coinspect security audits.