diff --git a/backend/selab_script.sql b/backend/selab_script.sql
index a944d666..c325acf4 100644
--- a/backend/selab_script.sql
+++ b/backend/selab_script.sql
@@ -1,4 +1,6 @@
 DROP TRIGGER IF EXISTS trg_check_submission_before_deadline ON submission;
+DROP TRIGGER IF EXISTS trg_check_team_size_before_joining ON student_group;
+
 DROP FUNCTION IF EXISTS check_submission_before_deadline();
 DROP FUNCTION IF EXISTS check_team_size_before_joining();