diff --git a/doc/templating.rst b/doc/templating.rst
index 10734ef0c67..5286e0312e5 100644
--- a/doc/templating.rst
+++ b/doc/templating.rst
@@ -400,7 +400,7 @@ are in HTML form), these variables are also available:
    * ``includehidden`` (``False`` by default): if true, the TOC tree will also
      contain hidden entries.
 
-.. data:: source_suffix
+.. data:: page_source_suffix
 
-   The suffix of the file that was rendered. Since we support multiple source_suffix's now,
+   The suffix of the file that was rendered. Since we support a list of :confval:`source_suffix`,
    this will allow you to properly link to the original source file.
diff --git a/sphinx/builders/html.py b/sphinx/builders/html.py
index d266aa46ecd..885e3d127b9 100644
--- a/sphinx/builders/html.py
+++ b/sphinx/builders/html.py
@@ -428,7 +428,7 @@ def get_doc_context(self, docname, body, metatags):
             toc = toc,
             # only display a TOC if there's more than one item to show
             display_toc = (self.env.toc_num_entries[docname] > 1),
-            source_suffix = source_suffix,
+            page_source_suffix = source_suffix,
         )
 
     def write_doc(self, docname, doctree):