diff --git a/server/RoboFile.php b/server/RoboFile.php
index 79d0bd3357..7e279974af 100644
--- a/server/RoboFile.php
+++ b/server/RoboFile.php
@@ -38,7 +38,7 @@ public function deployPantheon($branchName = 'master') {
 
     if ($result->getMessage()) {
       $this->yell($result->getMessage());
-      // throw new Exception('The GitHub working directory is dirty. Please commit any pending changes or add to .gitignore.');
+      throw new Exception('The GitHub working directory is dirty. Please commit any pending changes or add to .gitignore.');
     }
 
     $result = $this