diff --git a/cnam/travaux/thesis/build.py b/cnam/travaux/thesis/build.py
index 97509f3..42fa9c0 100755
--- a/cnam/travaux/thesis/build.py
+++ b/cnam/travaux/thesis/build.py
@@ -17,7 +17,7 @@ DOCUMENTS = [
     {ENGLISH: 'thesis', FRENCH: 'mémoire'},
     {ENGLISH: 'presentation', FRENCH: 'présentation'},
 ]
-TITLE = {
+TITLE_LONG = {
     ENGLISH: 'Incremental Live Operating Systems',
     FRENCH: 'Systèmes d’exploitation autonomes incrémentaux',
 }
@@ -77,7 +77,7 @@ def build(directory, sign):
             # prepare variables
             variables = {
                 'author': AUTHOR,
-                'title': TITLE[language],
+                'titlelong': TITLE_LONG[language],
                 'titlesub': SUBTITLE[language],
                 'dateshort': DATE_SHORT,
                 'datelong': DATE_LONG[language],
diff --git a/cnam/travaux/thesis/presentation/variables.tex b/cnam/travaux/thesis/presentation/variables.tex
index a010911..1f859b9 100644
--- a/cnam/travaux/thesis/presentation/variables.tex
+++ b/cnam/travaux/thesis/presentation/variables.tex
@@ -1,3 +1,5 @@
 \logo{\includegraphics[height=7.5em]{../../cnam}}
+\title[\titlelong]{\titlelong}
+\subtitle{\titlesub}
 \institute[CNAM]{Conservatoire National des Arts et Métiers}
 \date[\typeshort \dateshort]{\typelong\\\datelong}
diff --git a/cnam/travaux/thesis/thesis/back.tex b/cnam/travaux/thesis/thesis/back.tex
index 08dff9f..e05667d 100644
--- a/cnam/travaux/thesis/thesis/back.tex
+++ b/cnam/travaux/thesis/thesis/back.tex
@@ -5,7 +5,7 @@
 \addcontentsline{toc}{chapter}{\back}
 
 \begin{center}\begin{large}\textbf{
-\title\\
+\titlelong\\
 \titlesub
 }\end{large}\end{center}
 
diff --git a/cnam/travaux/thesis/thesis/front.tex b/cnam/travaux/thesis/thesis/front.tex
index 84d8026..0c93f99 100644
--- a/cnam/travaux/thesis/thesis/front.tex
+++ b/cnam/travaux/thesis/thesis/front.tex
@@ -34,7 +34,7 @@ DES {\larger[2] A}RTS ET {\larger[2] M}ÉTIERS
 
 \hrq
 
-\title\\
+\titlelong\\
 \titlesub
 
 \ml