diff --git a/build/build.ps1 b/build/build.ps1
index 5add85a3a..652b18ffd 100644
--- a/build/build.ps1
+++ b/build/build.ps1
@@ -13,6 +13,7 @@ cd ..
 # build ui
 cd ui
 npm install
+node extractLocals.js
 node_modules\.bin\node-sass --output dist\css --sourcemap=none scss\
 node_modules\.bin\webpack
 Copy-Item dist ..\app\ -recurse
diff --git a/build/build.sh b/build/build.sh
index e3a6fffe6..3bae4a960 100755
--- a/build/build.sh
+++ b/build/build.sh
@@ -61,6 +61,7 @@ npm install
 (
   cd "$ROOT/ui"
   npm install
+  node extractLocals.js
   node_modules/.bin/node-sass --output dist/css --sourcemap=none scss/
   node_modules/.bin/webpack
   cp -r dist/* "$ROOT/app/dist/"