diff --git a/book.tex b/book.tex
index 9758b92..a12cf55 100644
--- a/book.tex
+++ b/book.tex
@@ -17411,7 +17411,7 @@ \section{The \LangLam{} Language}
   \gray{\LfunGrammarPython} \\   \hline
   \LlambdaGrammarPython \\
   \begin{array}{lcl}
-    \LangFunM{} &::=& \Def\ldots \Stmt\ldots
+    \LangLamM{} &::=& \Def\ldots \Stmt\ldots
   \end{array}
 \end{array}
 \]