diff --git a/prep-sources b/prep-sources
index 5874aff..357b6c7 100755
--- a/prep-sources
+++ b/prep-sources
@@ -1,9 +1,17 @@
 #!/bin/bash
 
-# Prepare source for RPM build
+#
+# Build  NS7 UI
+#
 
-# download langs from transifex
+set -e
 
-# tar directory
-pushd ui && npm install && npm run build && cd dist && tar cvzf ../../nethserver-fail2ban-cockpit.tar.gz *
-popd
\ No newline at end of file
+# Build UI
+NODE_OPTIONS="--openssl-legacy-provider"
+export NODE_OPTIONS
+pushd ui
+npm install
+npm run build
+popd
+
+tar -C ui/dist -c -z -f nethserver-fail2ban-cockpit.tar.gz .