diff --git a/app/interactors/problem_destroy.rb b/app/interactors/problem_destroy.rb
index 4694c74..6516dc5 100644
--- a/app/interactors/problem_destroy.rb
+++ b/app/interactors/problem_destroy.rb
@@ -37,8 +37,8 @@ class ProblemDestroy
   end
 
   def delete_errs
-    Err.collection.remove(:_id => { '$in' => errs_id })
     Notice.collection.remove(:err_id => { '$in' => errs_id })
+    Err.collection.remove(:_id => { '$in' => errs_id })
   end
 
   def delete_comments
--
libgit2 0.21.2