diff --git a/lib/active_merchant/billing/gateways/d_local.rb b/lib/active_merchant/billing/gateways/d_local.rb
index de64520cb3d..97c4d55d410 100644
--- a/lib/active_merchant/billing/gateways/d_local.rb
+++ b/lib/active_merchant/billing/gateways/d_local.rb
@@ -245,7 +245,7 @@ def success_from(action, response)
         return false unless response['status_code']
 
         if action == 'void'
-          response['status_code'] == '400' && response['status'] == 'CANCELLED'
+          response['status_code'].to_s == '400' && response['status'] == 'CANCELLED'
         else
           %w[100 200 400 600 700].include? response['status_code'].to_s
         end