diff --git a/app/models/concerns/quickbooks_oauth.rb b/app/models/concerns/quickbooks_oauth.rb
index d99344d..90d593c 100644
--- a/app/models/concerns/quickbooks_oauth.rb
+++ b/app/models/concerns/quickbooks_oauth.rb
@@ -72,6 +72,10 @@ module QuickbooksOauth
       oauth_consumer_key = Setting.plugin_redmine_qbo['settingsOAuthConsumerKey']
       oauth_consumer_secret = Setting.plugin_redmine_qbo['settingsOAuthConsumerSecret']
 
+      # Are we are playing in the sandbox?
+      Quickbooks.sandbox_mode = Setting.plugin_redmine_qbo['sandbox'] ? true : false
+      logger.info "Sandbox mode: #{Quickbooks.sandbox_mode}"
+
       options = {
         site: "https://appcenter.intuit.com/connect/oauth2",
         authorize_url: "https://appcenter.intuit.com/connect/oauth2",
diff --git a/app/views/qbo/_settings.html.erb b/app/views/qbo/_settings.html.erb
index bc2b9d3..d75609a 100644
--- a/app/views/qbo/_settings.html.erb
+++ b/app/views/qbo/_settings.html.erb
@@ -57,6 +57,13 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
       </td>
     </tr>
 
+    <tr>
+      <th><%=t(:label_sandbox)%></th>
+      <td>
+        <%= check_box_tag 'settings[sandbox]', @settings['sandbox'], @settings['sandbox'] %>
+      </td>
+    </tr>
+
      <tr>
         <th><%=t(:label_oauth_expires)%></th>
         <td><%= if Qbo.exists? then Qbo.first.oauth2_access_token_expires_at end %>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 81a598e..0db3fc6 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -93,3 +93,4 @@ en:
   label_actions: "Actions"
   label_create_estimate: "Create Estimate"
   label_syncing: "Syncing Quickbooks"
+  label_sandbox: "Sandbox"
diff --git a/init.rb b/init.rb
index 8523b8e..fa577ca 100644
--- a/init.rb
+++ b/init.rb
@@ -39,9 +39,6 @@ Redmine::Plugin.register :redmine_qbo do
   Project.safe_attributes 'customer_id'
   Project.safe_attributes 'vehicle_id'
 
-  # We are playing in the sandbox 
-  #Quickbooks.sandbox_mode = true
-
   # set per_page globally
   WillPaginate.per_page = 20