diff --git a/scripts/build-gui.js b/scripts/build-gui.js
index aafb7c7..e0e4616 100644
--- a/scripts/build-gui.js
+++ b/scripts/build-gui.js
@@ -1,11 +1,12 @@
 const childProcess = require('child_process');
 const path = require('path');
 
-childProcess.spawnSync(
+const child = childProcess.spawnSync(
     'npm', ['run', 'build'],
     {
         cwd: path.join('node_modules', 'scratch-gui'),
         env: {
+            ...process.env,
             BUILD_MODE: 'dist',
             STATIC_PATH: 'static'
         },
@@ -13,3 +14,6 @@ childProcess.spawnSync(
         stdio: 'inherit'
     }
 );
+
+if (child.error) throw child.error;
+process.exit(child.status);