diff --git a/init.rb b/init.rb
index cbe8c9e..29bfa90 100644
--- a/init.rb
+++ b/init.rb
@@ -23,6 +23,6 @@ Redmine::Plugin.register :baupm_core do
     'baupm_manifest_orientation' => 'portrait',
     'baupm_manifest_display' => 'standalone',
     'baupm_manifest_start_url' => '.'
-    'baupm_enable_webapp' => 1
+    'baupm_enable_webapp' => '1'
   }, :partial => 'settings/baupm_settings'
 end