diff --git a/app/controllers/ad_banners_controller.rb b/app/controllers/ad_banners_controller.rb
index 837b45d..d07bc59 100644
--- a/app/controllers/ad_banners_controller.rb
+++ b/app/controllers/ad_banners_controller.rb
@@ -161,7 +161,7 @@ class AdBannersController < ApplicationController
         "timeout" => (adbanner.timeout * 1000),
         "more" => "More",
         "desc" => adbanner.title,
-        "extra_brefore_html" => extra_before_html,
+        "extra_before_html" => extra_before_html,
         "extra_after_html" => extra_after_html,
         "extra_ready_script" => "if (i == 0 && banner_wrap.find('.w-ad-banner__slide').index($(iframe).parents('.w-ad-banner__slide').eq(0))==0 && banner_wrap.find('[data-autoplay=1]').length != 0){
                       event.target.mute().playVideo();