diff --git a/scripts/_common.sh b/scripts/_common.sh
index 8e7fbad..6bb8b9f 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -79,8 +79,8 @@ function build_ui {
         # ynh_exec_as "$app" env "$ynh_node_load_PATH" yarn --cache-folder "./yarn-cache" --use-yarnrc ".yarnrc" install 2>&1
         # ynh_exec_as "$app" env "$ynh_node_load_PATH" yarn --cache-folder "./yarn-cache" --use-yarnrc ".yarnrc" add graphql --ignore-engines 2>&1
         # ynh_exec_as "$app" env "$ynh_node_load_PATH" yarn --cache-folder "./yarn-cache" --use-yarnrc ".yarnrc" run build --public-url "$path" 2>&1
-        ynh_exec_as "$app" env "$ynh_node_load_PATH" "$ynh_npm" install
-        ynh_exec_as "$app" env "$ynh_node_load_PATH" "$ynh_npm" run build
+        ynh_exec_as "$app" env "$ynh_node_load_PATH" NODE_ENV=production "$ynh_npm" install
+        ynh_exec_as "$app" env "$ynh_node_load_PATH" NODE_ENV=production "$ynh_npm" run build
     popd || ynh_die
 
     cp -rT "$install_dir/sources/ui/build" "$install_dir/output/ui"