diff --git a/scripts/build-client-js.sh b/scripts/build-client-js.sh
index 6d83d74301..6c52dc87b2 100755
--- a/scripts/build-client-js.sh
+++ b/scripts/build-client-js.sh
@@ -23,5 +23,5 @@ cross-env BABEL_ENV="browser" browserify -t [babelify] \
 		-o ../../../static/js/registrationDetails.js \
 		-o ../../../static/js/revision.js \
 		-o ../../../static/js/search.js \
-	] > ../../../static/js/bundle.js
+	] | uglifyjs > ../../../static/js/bundle.js
 popd