diff --git a/centrale.sty b/centrale.sty
index 1cda545..272f385 100644
--- a/centrale.sty
+++ b/centrale.sty
@@ -40,7 +40,7 @@
 \pagestyle{fancy}
 \fancyhf{}
 \rhead{\nouppercase{\thepage}}
-\lhead{\nouppercase{\rightmark}}
+\lhead{\nouppercase{\leftmark}}
 
 % ------------- Images, figures et tables ------------- 
 \RequirePackage{epstopdf} 	% utiliser .eps
@@ -204,7 +204,7 @@
 %------------------------------------------METTRE DU CODE INFORMATIQUE------------------------------------------%
 
 
-\lstset{language=Python,%
+\lstset{language=python,%
     basicstyle=\footnotesize,
     breaklines=false,%,
     keywordstyle=\color{blue},%