diff --git a/flask_pypi_proxy/templates/simple_package.html b/flask_pypi_proxy/templates/simple_package.html
index 0c42649..b0e52cc 100644
--- a/flask_pypi_proxy/templates/simple_package.html
+++ b/flask_pypi_proxy/templates/simple_package.html
@@ -6,9 +6,9 @@
   <h1>Links for {{ package_name }}</h1>
   {% for package_version in versions %}
     {% if not package_version.external_link %}
-      <a href="/packages/source/{{ source_letter }}/{{ package_name }}/{{ package_version.name }}#md5={{ package_version.md5 }}">{{ package_version.name }}</a><br>
+      <a href="{{ url_for('package', package_type='source', letter=source_letter, package_name=package_name, package_file=package_version.name) }}#md5={{ package_version.md5 }}">{{ package_version.name }}</a><br>
     {% else %}
-      <a href="/packages/source/{{ source_letter }}/{{ package_name }}/{{ package_version.name }}?{{ package_version.external_link }}">{{ package_version.name }}</a><br>
+      <a href="{{ url_for('package', package_type='source', letter=source_letter, package_name=package_name, package_file=package_version.name) }}?{{ package_version.external_link }}">{{ package_version.name }}</a><br>
     {% endif %}
   {% endfor %}
 </body>