diff --git a/install.sh b/install.sh
index e6c96ef..0ae35fe 100755
--- a/install.sh
+++ b/install.sh
@@ -235,12 +235,6 @@ install_world() {
 				createdb players-$pg_dbname
 		  fi
 
-		  if [[ $ver == "1.1" || $ver == "stable" || $ver == "dev" ]]; then
-				echo "auth_backend = sqlite3" >> world.mt
-		  fi
-	 
-		  ln -s $(pwd)/world.mt minetest/worlds/$world_name/world.mt
-
 		  ./upgrade.sh -w $world_name -b $ver
 
 		  mkdir -p minetest/worlds/$world_name/runes
diff --git a/upgrade.sh b/upgrade.sh
index 1097375..5f33abd 100755
--- a/upgrade.sh
+++ b/upgrade.sh
@@ -114,7 +114,7 @@ regen_worldmt() {
 		  if [[ -d $mods_path/$mod ]]; then
 				ln -s $mods_path/$mod $mods_minetest/$mod
 				
-				if [[ -e $mods_path/$mod/modpack.txt ]]; then
+				if [[ -e $mods_path/$mod/modpack.txt || -e $mods_path/$mod/modpack.conf ]]; then
 					 ls $mods_path/$mod | while read -r submod; do
 						  if [[ -d $mods_path/$mod/$submod ]]; then
 								local mod_enable="true"
@@ -201,7 +201,9 @@ update_world() {
 					 file=$world_repos/random_messages-$BRANCH;;
 				worldmt)
 					 do_copy=0
-					 regen_worldmt;;
+					 regen_worldmt
+					 rm -f $world_dest/world.mt
+					 ln -s $serverpath/world.mt $world_dest/world.mt;;
 				mtconf) # Exception ici car n'est pas un fichier world. Doit être appelé seul.
 					 file_dest=$serverpath/minetest/minetest.conf
 					 file=$serverpath/minetest-$BRANCH.conf;;