diff --git a/protocol/protocol.tex b/protocol/protocol.tex
index 09020c3a..615ff58d 100644
--- a/protocol/protocol.tex
+++ b/protocol/protocol.tex
@@ -8128,6 +8128,8 @@ $\versionField \geq 4$ and $\nShieldedSpend + \nShieldedOutput > 0$.
                 $\BindingPublic$ of $\SigHash$ ---
                 i.e.\ $\BindingSigVerify{\BindingPublic}(\SigHash, \bindingSig) = 1$.
         \end{itemize}}
+  \saplingonwarditem{If $\versionField \geq 4$ and $\nShieldedSpend + \nShieldedOutput = 0$,
+        then $\valueBalance$ \MUST be $0$.}
   \item A \coinbaseTransaction{} \MUSTNOT have any
         \joinSplitDescriptions\sapling{, \spendDescriptions, or \outputDescriptions}.
   \item A \transaction{} \MUSTNOT spend an output of a \coinbaseTransaction
@@ -9573,6 +9575,17 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
 } %sapling
 \end{itemize}
 
+\introlist
+\subparagraph{2018.0-beta-24}
+
+\begin{itemize}
+    \item No changes to \Sprout.
+\sapling{
+    \item Add a missing consensus rule for version 4 \transactions: if there are
+          no \Sapling spends or outputs, then $\valueBalance$ \MUST be $0$.
+} %sapling
+\end{itemize}
+
 \introlist
 \subparagraph{2018.0-beta-22}