diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 552a4cd..0fb0517 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -418,7 +418,7 @@ module ApplicationHelper
                                    :class => ('wiki-page' + (wiki_page ? '' : ' new')))
         else
           # project or wiki doesn't exist
-          title || page
+          all
         end
       else
         all
diff --git a/test/unit/helpers/application_helper_test.rb b/test/unit/helpers/application_helper_test.rb
index cafa92e..c72ab17 100644
--- a/test/unit/helpers/application_helper_test.rb
+++ b/test/unit/helpers/application_helper_test.rb
@@ -195,6 +195,9 @@ class ApplicationHelperTest < HelperTestCase
       '-[[Another page|Page]] link-' => '<del><a href="/projects/ecookbook/wiki/Another_page" class="wiki-page">Page</a> link</del>',
       # escaping
       '![[Another page|Page]]' => '[[Another page|Page]]',
+      # project does not exist
+      '[[unknowproject:Start]]' => '[[unknowproject:Start]]',
+      '[[unknowproject:Start|Page title]]' => '[[unknowproject:Start|Page title]]',
     }
     @project = Project.find(1)
     to_test.each { |text, result| assert_equal "<p>#{result}</p>", textilizable(text) }