diff --git a/plugins/organization_ratings/db/migrate/20151203121430_destroy_rejected_reports.rb b/plugins/organization_ratings/db/migrate/20151203121430_destroy_rejected_reports.rb
index 7d08281..56329ac 100644
--- a/plugins/organization_ratings/db/migrate/20151203121430_destroy_rejected_reports.rb
+++ b/plugins/organization_ratings/db/migrate/20151203121430_destroy_rejected_reports.rb
@@ -5,7 +5,7 @@ class DestroyRejectedReports < ActiveRecord::Migration
       settings = YAML.load(task['data'])
       comments << settings[:organization_rating_comment_id]
     end
-    execute("DELETE FROM comments WHERE id IN (#{comments.join(',')})")
+    execute("DELETE FROM comments WHERE id IN (#{comments.join(',')})") if comments.present?
   end
 
   def down
--
libgit2 0.21.2