diff --git a/scripts/change_url b/scripts/change_url
index 00732ee..7054336 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -42,9 +42,9 @@ fi
 ynh_script_progression --message="Rebuilding the app..." --weight=1
 
 ynh_use_nodejs
-ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm install
+ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm install --prefix="$install_dir"
 npx next telemetry disable
-ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm build
+ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm build --prefix="$install_dir"
 
 #=================================================
 # GENERIC FINALISATION
diff --git a/scripts/upgrade b/scripts/upgrade
index bef01fb..aa334d6 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -117,9 +117,9 @@ chown $app:$app "$install_dir/.env.local"
 ynh_script_progression --message="Rebuilding the app..." --weight=1
 
 ynh_use_nodejs
-ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm install
+ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm install --prefix="$install_dir"
 npx next telemetry disable
-ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm build
+ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm build --prefix="$install_dir"
 
 #=================================================
 # START SYSTEMD SERVICE