diff --git a/app/services/create_watch_video_service.rb b/app/services/create_watch_video_service.rb
index c7b3bb3bb..8a9bb7f08 100644
--- a/app/services/create_watch_video_service.rb
+++ b/app/services/create_watch_video_service.rb
@@ -38,9 +38,9 @@ class CreateWatchVideoService < ApplicationService
         end
       else
         # 开始播放时记录一次
-        if params[:course_id].present?
+        if params[:course_video_id].present?
           # 课堂视频
-          course_video = CourseVideo.find_by(params[:course_video_id])
+          course_video = CourseVideo.find(params[:course_video_id])
           watch_course_video = WatchCourseVideo.find_or_initialize_by(course_video_id: course_video.id, user_id: user.id) do |d|
             d.start_at = current_time
             d.duration = params[:duration]