diff --git a/compile.sh b/compile.sh
index 62d34bb..968f5ea 100755
--- a/compile.sh
+++ b/compile.sh
@@ -9,7 +9,7 @@ find . -name "main.tex" -execdir sh -c "pwd  && pdflatex -shell-escape -interact
 
 mkdir "public"
 for i in `find . -maxdepth 1 -type d -regex \.\/[0-9].*?`;do
-    cp $i/Cours/main.pdf ./public/${i:2}.pdf;
+    cp -f $i/Cours/main.pdf ./public/${i:2}.pdf;
 done;
 #clean up :
 shopt -s globstar