diff --git a/model.tex b/model.tex
index 364c363552298570a16f8ffda04057e33757333a..8e536d0da938f2e2d66a79055a1aff7584e55e38 100644
--- a/model.tex
+++ b/model.tex
@@ -54,7 +54,7 @@
 \author{Graba Tarik}
 \institute{ TELECOM ParisTech }
 \dept{COMELEC--SEN}
-
+\extralogo{\includegraphics[width=2cm]{drawing}}
 \date{}
 %------------------------------------------------------------------------------
 \begin{document}
diff --git a/texinputs/beamerthemetptnew.sty b/texinputs/beamerthemetptnew.sty
index df4aaee96e16dff2e28bf69655ade0fe93a02814..2071e5e9cee198332024968ea442e6e15c460934 100644
--- a/texinputs/beamerthemetptnew.sty
+++ b/texinputs/beamerthemetptnew.sty
@@ -20,7 +20,14 @@
 \newcommand\dept[1]{\gdef\insertdept{#1}}
 \dept{}
 
-\pgfdeclareimage[width=2.156cm]{LogoFirst}{logo.pdf}
+% le logo de la page de titre
+\pgfdeclareimage[width=2cm]{LogoFirst}{logo.pdf}
+% pour positionner ce logo par rapport au coin sup. gauche
+\newcommand\logoskipv{.12\paperheight}
+\newcommand\logoskiph{.10\paperwidth}
+% Pour ajouter quelque chose sous le logo de la page de titre
+\newcommand\extralogo[1]{\gdef\insertextralogo{#1}}
+\extralogo{}
 
 % le logo fait 1cm de haut soit 7.8% des 12.8cm de large d'un beamer 4/3 standard
 \newcommand\logoheight{.07812\paperwidth}
@@ -79,12 +86,13 @@
 {%
    \begin{columns}
    \begin{column}{.4\paperwidth}
-      \@tempdima=\textwidth%
-      \advance\@tempdima by - 13mm%
-      \hspace{13mm}%
-      \begin{minipage}[t][\paperheight][t]{.3\@tempdima}%
-         \vspace{13mm}%
-         \pgfuseimage{LogoFirst}%
+      \begin{minipage}[t][\paperheight][t]{\textwidth}%
+         \vspace{\logoskipv}\par%
+         \hspace{\logoskiph}\pgfuseimage{LogoFirst}\par%
+         \vspace{4mm}%
+         \hspace{\logoskiph}\usebeamercolor[fg]{title}\usebeamerfont{title}{%
+            \insertextralogo
+         }\par%
       \end{minipage}
    \end{column}
    \begin{column}{.6\paperwidth}