diff --git a/app/controllers/issues_controller.rb b/app/controllers/issues_controller.rb
index e1faa9b..3f3966a 100644
--- a/app/controllers/issues_controller.rb
+++ b/app/controllers/issues_controller.rb
@@ -272,6 +272,7 @@ class IssuesController < ApplicationController
       if issue.save
         moved_issues << issue
       else
+        logger.info "issue could not be updated or copied: #{issue.errors.full_messages}" if logger && logger.info
         # Keep unsaved issue ids to display them in flash error
         unsaved_issue_ids << issue.id
       end
diff --git a/app/controllers/timelog_controller.rb b/app/controllers/timelog_controller.rb
index 92210ff..64946a3 100644
--- a/app/controllers/timelog_controller.rb
+++ b/app/controllers/timelog_controller.rb
@@ -198,6 +198,7 @@ class TimelogController < ApplicationController
       time_entry.safe_attributes = attributes
       call_hook(:controller_time_entries_bulk_edit_before_save, { :params => params, :time_entry => time_entry })
       unless time_entry.save
+        logger.info "time entry could not be updated: #{time_entry.errors.full_messages}" if logger && logger.info
         # Keep unsaved time_entry ids to display them in flash error
         unsaved_time_entry_ids << time_entry.id
       end