diff --git a/app/models/notice.rb b/app/models/notice.rb
index df61c85a3..4cca6d8e7 100644
--- a/app/models/notice.rb
+++ b/app/models/notice.rb
@@ -30,7 +30,11 @@ class Notice
 
   scope :ordered, ->{ order_by(:created_at.asc) }
   scope :reverse_ordered, ->{ order_by(:created_at.desc) }
-  scope :for_errs, lambda {|errs| where(:err_id.in => errs.all.map(&:id))}
+  scope :for_errs, Proc.new { |errs|
+    if (ids = errs.all.map(&:id)) && ids.present?
+      where(:err_id.in => ids)
+    end
+  }
 
   def user_agent
     agent_string = env_vars['HTTP_USER_AGENT']