diff --git a/app/models/graduation_topic.rb b/app/models/graduation_topic.rb
index 5a2a630e5..294bfa785 100644
--- a/app/models/graduation_topic.rb
+++ b/app/models/graduation_topic.rb
@@ -50,10 +50,10 @@ class GraduationTopic < ApplicationRecord
   def student_graduation_topic_status
     sgt = self.student_graduation_topics
     status =
-        if sgt.is_accepting.count == 0
-          2
-        elsif sgt.is_refused.count == self.student_graduation_topics.size
+        if sgt.where(status: [0, 1]).count.zero?
           0
+        elsif sgt.is_accepting.count.zero?
+          2
         else
           1
         end