diff --git a/doc/_templates/layout.html b/doc/_templates/layout.html
index ad1c55a25161..aa1f278d51b5 100644
--- a/doc/_templates/layout.html
+++ b/doc/_templates/layout.html
@@ -82,7 +82,8 @@ <h3>{{ _('Navigation') }}</h3>
         VERSION:     '{{ release|e }}',
         COLLAPSE_INDEX: false,
         FILE_SUFFIX: '{{ '' if no_search_suffix else file_suffix }}',
-        HAS_SOURCE:  {{ has_source|lower }}
+        HAS_SOURCE:  {{ has_source|lower }},
+        SOURCELINK_SUFFIX: '{{ sourcelink_suffix }}'
       };
     </script>
     {%- for scriptfile in script_files %}