diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 9938c3b0b..c946cd5c1 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -1197,7 +1197,7 @@ class CoursesController < ApplicationController
 
         if (teacher_role && student_role) || message.to_s == "您已是课堂成员"
           render json: { status: 0, message: message, course_id: course.id}
-        elsif student_role
+        elsif student_role.to_i == 1
           render json: { status: 0, message: "加入成功", course_id: course.id}
         else
           normal_status(message)