diff --git a/layouts/_default/list.html b/layouts/_default/list.html
index 94c9f01..74352c1 100644
--- a/layouts/_default/list.html
+++ b/layouts/_default/list.html
@@ -15,7 +15,8 @@
   "dateModified": {{ .Date.Format $ISO8601 }},
   {{- end }}
   {{- /* all of the site's categories/tags, from Hugo's tpl/template_embedded.go */}}
-  "keywords": {{ range $plural, $terms := .Site.Taxonomies }}{{ range $term, $val := $terms }}{{ printf "%s," $term }}{{ end }}{{ end }}
+  {{- $keywords := slice }}{{ range $plural, $terms := .Site.Taxonomies }}{{ range $term, $val := $terms }}{{ $keywords = $keywords | append $term }}{{ end }}{{ end }}
+  "keywords": {{ delimit $keywords ", " }} 
   {{- with .Site.Params.description -}}
   ,
   "description": {{- . -}}