diff --git a/book.tex b/book.tex
index 437988c..8274d4a 100644
--- a/book.tex
+++ b/book.tex
@@ -1769,7 +1769,7 @@ \section{Example Compiler: A Partial Evaluator}
     case Expr(value):
       return Expr(pe_exp(value))
 
-def pe_P_int(p):
+def pe_Lint(p):
   match p:
     case Module(body):
       new_body = [pe_stmt(s) for s in body]