diff --git a/src/main/resources/mapper/course/CourseCollectDao.xml b/src/main/resources/mapper/course/CourseCollectDao.xml
index 80e18a5c..99baeb20 100644
--- a/src/main/resources/mapper/course/CourseCollectDao.xml
+++ b/src/main/resources/mapper/course/CourseCollectDao.xml
@@ -49,7 +49,6 @@
             c1.course_details_id as courseDetailsId
         FROM
             `course_collect` c1
-                INNER JOIN course_collect c2 ON c1.course_id = c2.course_id AND c2.user_id = #{userId} AND c2.classify = 1
         WHERE
             c1.classify = 2
           AND c1.user_id = #{userId}