diff --git a/lambda_calcul.md b/lambda_calcul.md
index 6aa5561..d182f23 100644
--- a/lambda_calcul.md
+++ b/lambda_calcul.md
@@ -14,7 +14,7 @@ jupyter:
 ---
 
 
-#  $\lambda$-calcul
+#  \[\lambda\]-calcul
 
 <!-- #region toc-hr-collapsed=true toc-nb-collapsed=true -->
 ## Analyseur lexical