diff --git a/app/views/courses/_set_join.js.erb b/app/views/courses/_set_join.js.erb
index 41ca263ce..c125e34bc 100644
--- a/app/views/courses/_set_join.js.erb
+++ b/app/views/courses/_set_join.js.erb
@@ -11,7 +11,7 @@
 	<% elsif @state == 3 %>
         alert("您已经加入了课程");
     <% elsif @state == 4 %>
-        alert("您已经的课程不存在");
+        alert("您加入的课程不存在");
     <% elsif @state == 5 %>
         alert("您还未登录");
     <% else %>