diff --git a/check_rc_upgrade.sh b/check_rc_upgrade.sh
index 7f7e763..8c30288 100755
--- a/check_rc_upgrade.sh
+++ b/check_rc_upgrade.sh
@@ -209,7 +209,7 @@ then
 		for file in index.php bin/ SQL/ program/ installer/ skins/default/ plugins/
 		do
 			echo "  - Mise a jour de $file"
-			rsync -a --delete $src/$file $to/$file
+			rsync -a $src/$file $to/$file
 			chown $OWNER:$GROUP -R $to/$file
 		done