diff --git a/app/models/journal.rb b/app/models/journal.rb
index 88b71d9ff..2da815a44 100644
--- a/app/models/journal.rb
+++ b/app/models/journal.rb
@@ -219,15 +219,15 @@ class Journal < ActiveRecord::Base
   def decrease_issues_journal_count
     unless self.issue.project.nil?
       project = self.issue.project
-      project.update_attribute(:journals_count, project.journals_count - 1)
+      project.project_score.update_attribute(:issue_journal_num, project.project_score.issue_journal_num - 1)
     end
   end
 
   # issue留言总数更新
   def add_journals_count
-    if !self.issue.project.nil? && self.journalized_type == "Issue" && self.issue.project.project_score.nil?
+    if !self.issue.project.nil? && self.journalized_type == "Issue" && !self.issue.project.project_score.nil?
       project = self.issue.project
-      project.project_score.update_attribute(:issue_journal_num, project.project_score.journals_count + 1)
+      project.project_score.update_attribute(:issue_journal_num, project.project_score.issue_journal_num + 1)
     end
   end
 end