diff --git a/protocol/protocol.tex b/protocol/protocol.tex
index 5e437a71..c6a5aa5e 100644
--- a/protocol/protocol.tex
+++ b/protocol/protocol.tex
@@ -8369,7 +8369,7 @@ where
 \end{formulae}
 
 \vspace{1ex}
-$\BlakeTwobOf{256}{p, x}$ is defined in \crossref{concreteblake2}.
+$\BlakeTwosOf{256}{p, x}$ is defined in \crossref{concreteblake2}.
 
 \vspace{-1ex}
 \securityrequirement{
@@ -14646,6 +14646,13 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
 \nufive{
     \item ZIP 244 is not modified by ZIP 225.
 } %nufive
+\sapling{
+    \item \crossref{concretecrhivk} incorrectly cross-referenced $\BlakeTwob{256}$ rather than $\BlakeTwos{256}$.
+          The actual specification was correct.
+} %sapling
+\end{itemize}
+
+
 \historyentry{2022.3.4}{2022-06-22}
 \begin{itemize}
 \canopy{