diff --git a/lib/cr.sty b/lib/cr.sty
index 97f501d..f99acf6 100644
--- a/lib/cr.sty
+++ b/lib/cr.sty
@@ -2,6 +2,7 @@
 \usepackage{geometry}
 \usepackage[french]{babel}
 \usepackage[T1]{fontenc}
+\usepackage{xparse}
 
 \graphicspath{{images/}}
 \geometry{
@@ -51,10 +52,11 @@
 	\end{titlepage}
 }
 
-\newcommand{\crfigure}[2] {
+\NewDocumentCommand{\crfigure}{O{0.75\textwidth} m m}{
 	\begin{figure}[h]
 	    \centering
-	    \includegraphics[width=0.75\textwidth]{#1}
-	    \caption{#2}
+	    \includegraphics[width=#1]{#2}
+	    \caption{#3}
 	\end{figure}
 }
+