memoire-m2

diff --git a/memoires.cls b/memoires.cls
@@ -686,6 +686,7 @@
     }
     \fancyfoot{}
 }
+\setlength\headheight{15.68004pt}
 \pagestyle{momoir}
 \pagenumbering{arabic}
 
@@ -781,6 +782,9 @@
    \setcounter{page}{1}}
 
 % Prints the book cover (front and back)
+\RequirePackage{pgfplots, tikz}
+\usetikzlibrary{calc}
+\pgfplotsset{compat=1.16}
 \newcommand{\makecover}[1][]{%
 % Clear the bage if this is the back cover
 \unless\if\relax\detokenize\expandafter{#1}\relax

diff --git a/preamble.tex b/preamble.tex
@@ -2,13 +2,9 @@
 \usepackage{xfrac, cancel, multicol, tabularx, relsize}
 \usepackage[normalem]{ulem}
 \usepackage[backend=biber, bibstyle=ieee]{biblatex}
-\usepackage{pgfplots, tikz, tikz-cd}
+\usepackage{tikz-cd}
 \usepackage{graphicx, wrapfig}
 
-% Configure graphics
-\usetikzlibrary{calc, shadows.blur, shapes.geometric, patterns, arrows}
-\pgfplotsset{compat=1.16}
-
 % Useful theorem definitions
 \theoremstyle{theorem}
 \newboxedtheorem{theorem}{Theorem}