diff --git a/scripts/package_assets.sh b/scripts/package_assets.sh
index f747d8d51..a1f1571dd 100755
--- a/scripts/package_assets.sh
+++ b/scripts/package_assets.sh
@@ -5,4 +5,4 @@
 set -euo pipefail
 
 cd web/ui
-find static -type f -name '*.gz' -print0 | xargs -0 tar cf static.tar.gz
+find static -type f -not -name '*.gz' -print0 | xargs -0 tar czf static.tar.gz