diff --git a/install/templates/install.twig b/install/templates/install.twig
index 0d502c1..fb7f86a 100644
--- a/install/templates/install.twig
+++ b/install/templates/install.twig
@@ -104,7 +104,7 @@
                             <div class="form-group row hook-storage">
                                 <label for="storage_region" class="col-sm-3 col-form-label">AWS S3 endpoint</label>
                                 <div class="col-sm-9">
-                                    <input type="text" class="form-control hook-storage-input" id="storage_endpoint" name="storage_endpoint" placeholder="optional (for S3-compatible services)" autocomplete="off" data-default-local=null>
+                                    <input type="text" class="form-control hook-storage-input" id="storage_endpoint" name="storage_endpoint" placeholder="optional (for S3-compatible services)" autocomplete="off">
                                 </div>
                             </div>
                             <div class="form-group row hook-storage">