diff --git a/cours.cls b/cours.cls
index 97a51a3..25d08a6 100644
--- a/cours.cls
+++ b/cours.cls
@@ -47,7 +47,12 @@
 \usetikzlibrary{fit}
 \usetikzlibrary{positioning}
 \RequirePackage{schemabloc}
-\RequirePackage{circuitikz}
+
+
+\usepackage[european,cuteinductors,siunitx,straightvoltages]{circuitikz}
+\tikzset{every picture/.style={execute at begin picture={\shorthandoff{:;!?};}}}
+\usetikzlibrary{positioning, fit, calc}
+
 \RequirePackage{pgfplots}
 \RequirePackage{mathtools}
 \RequirePackage{amsfonts}