diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index a20b8d6..f97cc06 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -703,7 +703,7 @@ module ApplicationHelper
           oid = identifier.to_i
           case prefix
           when nil
-            if issue = Issue.visible.find_by_id(oid, :include => :status)
+            if oid.to_s == identifier && issue = Issue.visible.find_by_id(oid, :include => :status)
               anchor = comment_id ? "note-#{comment_id}" : nil
               link = link_to("##{oid}", {:only_path => only_path, :controller => 'issues', :action => 'show', :id => oid, :anchor => anchor},
                                         :class => issue.css_classes,
diff --git a/test/unit/helpers/application_helper_test.rb b/test/unit/helpers/application_helper_test.rb
index 8b22df0..1740fbc 100644
--- a/test/unit/helpers/application_helper_test.rb
+++ b/test/unit/helpers/application_helper_test.rb
@@ -260,6 +260,8 @@ RAW
       # ticket notes
       '#3-14'                       => note_link,
       '#3#note-14'                  => note_link,
+      # should not ignore leading zero
+      '#03'                         => '#03',
       # changesets
       'r1'                          => changeset_link,
       'r1.'                         => "#{changeset_link}.",