diff --git a/docs/_templates/breadcrumbs.html b/docs/_templates/breadcrumbs.html
new file mode 100644
index 0000000..9db4a54
--- /dev/null
+++ b/docs/_templates/breadcrumbs.html
@@ -0,0 +1,16 @@
+{% extends "!breadcrumbs.html" %}
+
+{# Overrides RTD's default "View page source" link formatting, which
+   forces the full page name in the link; but we don't want it because
+   page names include the repo, eg. "swh-model/index".
+   The view_in_phabricator.py extension sets swh_source_url to
+   ".../source/swh-model/browse/master/docs/index"
+#}
+{%- block breadcrumbs_aside %}
+foo
+  <li class="wy-breadcrumbs-aside">
+    {%- if hasdoc(pagename) and display_vcs_links %}
+      <a href="{{ swh_source_url }}{{ page_source_suffix }}">{{ _('View page source') }}</a>
+    {% endif %}
+  </li>
+{%- endblock %}
diff --git a/swh/docs/sphinx/view_in_phabricator.py b/swh/docs/sphinx/view_in_phabricator.py
index 64929a6..cd7b40d 100644
--- a/swh/docs/sphinx/view_in_phabricator.py
+++ b/swh/docs/sphinx/view_in_phabricator.py
@@ -1,31 +1,34 @@
 # Copyright (C) 2021  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 """
 Shows a link 'View this page in Phabricator' on top of each page.
 """
 
 
 def html_page_context(app, pagename, templatename, context, doctree):
     if pagename.startswith("apidoc/"):
         # Auto-generated documentation.
         # TODO: link to the .py
         context["show_source"] = False
         return
     elif pagename.startswith("swh-"):
         # .rst from a package's docs/ directory
-        repository = pagename.split("/", 1)[0]
-        path = "docs/"
+        (repository, _, path) = pagename.partition("/")
     else:
         # .rst from swh-docs/docs/
         repository = "swh-docs"
-        path = "docs/"
-    context[
-        "source_url_prefix"
-    ] = f"https://forge.softwareheritage.org/source/{repository}/browse/master/{path}"
+        path = pagename
+    source_url = (
+        f"https://forge.softwareheritage.org/source/{repository}"
+        f"/browse/master/docs/{path}"
+    )
+
+    # Set a variable that can be used by swh-docs/docs/_templates/breadcrumbs.html:
+    context["swh_source_url"] = source_url
 
 
 def setup(app):
     app.connect("html-page-context", html_page_context)